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 53 
 
 Revised February 197? 
 
 U.S. DEPARTMENT OF COMMERCE / National Bureau of Standards 
 
 List of 
 
 Voluntary Product Standards, 
 
 Commercial Standards, 
 
 and 
 Simplified Practice 
 Recommendations 
 
- 2 - 
 CONTENTS^ 
 
 Page 
 
 1. Introduction See below 
 
 2. Instructions for obtaining standards listed See below 
 
 3. Index of standards: 
 
 3.1. List by subject 3 
 
 3.2. Numerical lists: 
 
 Voluntary Product Standards 8 
 
 Commercial Standards 9 
 
 Simplified Practice Recommendations 9 
 
 1 . INTRODUCTION 
 
 This publication lists, by subject and in numerical order, existing Voluntary Product Standards 
 (PS) , Commercial Standards (CS) , and Simplified Practice Recommendations (R) . It contains 
 instructions for ordering them. 
 
 2. INSTRUCTIONS FOR OBTAINING STANDARDS LISTED 
 
 Printed standards available from the Superintendent of Documents, U.S. Government Printing Office, 
 Washington, D.C. 20402, are shown with the actual cost in the price column. The prices quoted are 
 for delivery to addresses in the United States and its possessions. In computing for postage, add 
 one-fourth the cost of the publication. Remittances should be made either by coupons (obtainable 
 from the Superintendent of Documents in denominations of 5, 10, 25, and 50 cents, and good until 
 used), or by check or money order payable to the Superintendent of Documents. 
 
 If the symbol "M" appears in the price column, the standard is out of print. Requests for single 
 copies of the standard or inquiries regarding the status of the standard should be sent to the 
 Standards Development Services Section, National Bureau of Standards, Washington, D.C. 20234. 
 
- 3 - 
 
 INDEX OF STANDARDS 
 
 3.1. List by Subject: 
 
 PRICE 
 
 ABRASIVES: 
 PS 8-67 
 
 AGGREGATES : 
 R 163-48 
 
 APPAREL: 
 PS 36-70 
 PS 42-70 
 
 PS 45-71 
 
 PS 54-72 
 
 CS 46-65 
 CS 151-50 
 
 CS 234-61 
 
 ART: 
 
 PS 30-70 
 PS 65-75 
 
 CS 98-62 
 CS 130-60 
 
 R 192-63 
 
 BAGS: 
 
 PS 44-71 
 
 BARS: 
 
 R 222-46 
 
 BEDDING: 
 PS 13-69 
 PS 63-75 
 
 R 2-62 
 
 BURNERS: 
 CS 75-56 
 
 CANS: 
 
 PS 61-74 
 
 CHALK: 
 
 PS 30-70 
 
 Grading of abrasive grain on coated abrasive products 
 
 Coarse aggregates (crushed stone, gravel, and slag) 
 
 Body measurements for the sizing of boys' apparel (under revision) 
 
 Body measurements for the sizing of women's patterns and apparel (under 
 
 revision) 
 
 Body measurements for the sizing of apparel for young men (students) (under 
 
 revision) 
 
 Body measurements for the sizing of girls' apparel (under revision) .... 
 
 Hosiery lengths and sizes excluding women's (under revision) 
 
 Body measurements for the sizing of apparel for infants, babies, toddlers 
 
 and children (for the knit underwear industry) (under revision) 
 
 Measurements for stretch socks and anklets 
 
 School chalk (part revision of CS 130-60 and R 192-63) 
 
 Paints and inks for art education in schools (part revision of CS 130-60 
 and R 192-63) Z297. 1-1975* 
 
 Artists' oil paints (under revision) 
 
 Color materials for art education in schools (under revision) 
 
 Crayons and related art materials for school use (types, sizes, packaging, 
 and colors) (under revision) 
 
 Paper ice bag sizes 
 
 Hot-rolled carbon steel bars and bar-size shapes 
 
 Uncored slab ur ethane foam for bedding and furniture cushioning 
 
 Latex foam mattresses for hospitals (superseded CS 182-51) Z255. 1-1975* . . 
 
 Bedding products and components (under revision) 
 
 Automatic mechanical-draft oil burners designed for domestic installations. 
 Plastic containers (jerry-cans) for petroleum products MH17 .1-1974*. . . . 
 School chalk (part revision of CS 130-60 and R 192-63) 
 
 M 
 .65 
 
 .30 
 
 M 
 
 M 
 
 .35 
 
 M 
 M 
 
 M 
 .50 
 
 .45 
 
 *American National Standard designation 
 
- 4 
 
 3.1. List by Subject (continued): 
 
 COLORS : 
 
 PS 30-70 School chalk (part revision of CS 130-60 and R 192-63) M 
 
 CS 98-62 Artists' oil paints (under revision) M 
 
 CS 130-60 Color materials for art education in schools (under revision) M 
 
 R 192-63 Crayons and related art materials for school use (types, sizes, packaging 
 
 and colors) M 
 
 COOLERS : 
 
 PS 49-71 Portable picnic coolers 25 
 
 DIAMOND POWDER: 
 
 PS 62-74 Grading of diamond powder in sub-sieve sizes (CS 261-63 revalidated) 
 
 Z300. 1-1974* 55 
 
 DOORS : 
 
 PS 4-66 Standard stock light-duty 1 3/8- and 1 3/4-inch thick flush-type interior 
 
 steel doors and frames M 
 
 PS 32-70 Hinged interior wood door units (revisions #1 and //2) M 
 
 PS 38-70 Steel bi-fold closet door units, frames and trim 45 
 
 CS 242-62 Standard stock commercial 1 3/4-inch thick steel doors and frames M 
 
 EQUIPMENT : 
 
 PS 15-69 Custom contact-molded reinforced-polyester chemical-resistant process 
 
 equipment 40 
 
 PS 66-75 Safety requirements for home playground equipment Z304. 1-1976* 45 
 
 EXTRUSIONS : 
 
 PS 26-70 Rigid poly (vinyl chloride) (PVC) profile extrusions M 
 
 FENCING : 
 
 CS 246-62 Steel chain link galvanized fence fabric M 
 
 CS 269-65 Aluminum alloy chain link fencing M 
 
 FILM: 
 
 PS 29-70 Plastic heat-shrinkable film 30 
 
 CS 192-53 General purpose vinyl plastic film (amendments 1 and 2) M 
 
 CS 227-59 Polyethylene film (amended 1963) M 
 
 FIXTURES, PLUMBING: 
 
 PS 5-66 Porcelain enameled formed steel plumbing fixtures (addendum) M 
 
 PS 6-66 Trim for water-closet bowls, tanks and urinals (dimensional standards) . . M 
 
 CS 243-62 Stainless steel plumbing fixtures (designed for residential use) M 
 
 FLAMMABILITY : 
 
 PS 46-71 Flame-resistant paper and paperboard 25 
 
 CS 191-53 Flammability of clothing textiles M 
 
 FLOORING : 
 
 PS 27-70 Mosaic -parquet hardwood slat flooring M 
 
 FOAM: 
 
 PS 13-69 Uncored slab urethane foam for bedding and furniture cushioning M 
 
 PS 63-75 Latex foam mattresses for hospitals (superseded CS 182-51) Z255. 1-1975* . .50 
 
 FORMS: 
 
 PS 16-69 Types and sizes of forms for one-way concrete joist construction 25 
 
 *American National Standard designation 
 
3.1. List by Subject (continued) 
 
 PRICE 
 
 HARDB( 
 PS 
 
 )ARD: 
 58-73 
 
 PS 
 
 59-73 
 
 PS 
 
 60-73 
 
 HARDWARE: 
 
 CS 
 
 132-46 
 
 CS 
 
 138-55 
 
 R 3-60 
 
 R 78-50 
 
 HIDE: 
 
 
 CS 
 
 268-65 
 
 HOSE: 
 
 
 CS 
 
 209-57 
 
 CS 
 
 247-62 
 
 ICE: 
 
 PS 44-71 
 PS 48-71 
 
 INSULATION: 
 PS 57-73 
 
 R 257-55 
 
 JEWELRY : 
 PS 67-76 
 
 PS 68-76 
 
 PS 69-76 
 
 PS 70-76 
 PS 71-76 
 
 LAMINATES : 
 CS 245-62 
 
 LIFTS : 
 
 CS 202-56 
 
 LUBRICATION: 
 CS 274-66 
 
 LUMBER: 
 
 PS 20-70 
 
 MATTRESSES : 
 PS 63-75 
 
 R 2-62 
 
 Basic hardboard (supersedes CS 251-63) A135. 4-1973* 
 
 Prefinished hardboard paneling (supersedes CS 176-58) A135. 5-1973*. . . 
 Hardboard siding A135. 6-1973* 
 
 Hardware cloth (amended 1954) 
 
 Insect wire screening (amended 1961) 
 
 Metal lath (expanded and sheet) and metal plastering accessories 
 
 (amended 1961) 
 
 Iron and steel roofing, siding, and ridge roll 
 
 Hide trim pattern for domestic cattlehides (amended 1966) 
 
 Vinyl chloride plastics garden hose 
 
 TFE-Fluorocarbon (polytetrafluoroethylene) resin flexible hose (wire 
 braid reinforced) 
 
 Paper ice bag sizes 
 
 Package quantities of cubed, sized, crushed, and block ice 
 
 Celluloslc fiber insulating board (supersedes CS 42-49 & R 179-63) 
 
 (errata 1-2-75) A194. 1-1973* 
 
 Thermal conductance factors for preformed above-deck roof insulation 
 (amended 1962) 
 
 Marking of gold-filled and rolled-gold-plate articles other than 
 
 watchcases (amended 2-25-39) (revalidation of CS 47-34) 
 
 Marking articles made of silver in combination with gold (revalidation 
 of CS 51-35) 
 
 Marking of articles made wholly or in part of platinum (revalidation of 
 CS 66-38) 
 
 Marking articles made of karat gold (revalidation of CS 67-38) 
 
 Marking of jewelry and novelties of silver (revalidation of CS 118-44) . 
 
 Vinyl-metal laminates 
 
 Industrial lifts and hinged loading ramps (errata) 
 
 TFE-Fluorocarbon (polytetrafluoroethylene) resin sintered thin coatings 
 for dry film lubrication 
 
 American softwood lumber standard (amended 3-9-72) 
 
 Latex foam mattresses for hospitals (superseded CS 182-51) Z255. 1-1975* 
 Bedding products and components (under revision) 
 
 .40 
 .45 
 .40 
 
 M 
 .25 
 
 .40 
 
 .40 
 
 .50 
 M 
 
 * American National Standard designation 
 
- 6 - 
 3.1. List by Subject (continued) 
 
 PACKAGING QUANTITIES: 
 
 PS 14-69 Salt packages 
 
 PS 40-70 Package quantities of green olives 
 
 PS 41-71 Package quantities of instant mashed potatoes (errata) 
 
 PS 48-71 Package quantities of cubed, sized, crushed, and block ice 
 
 PS 50-71 Package quantities of toothpaste 
 
 PAINTS : 
 
 PS 65-75 Paints and inks for art education in schools (part revision of 
 
 CS 130-60 and R 192-63) Z297. 1-1975* 
 
 CS 98-62 Artists' oil paints (under revision) 
 
 PANELS : 
 
 PS 53-72 Glass-fiber reinforced polyester structural plastic panels (supersedes 
 
 CS 214-57) 
 
 PS 59-73 Prefinished hardboard paneling (supersedes CS 176-58) A135. 5-1973* . . 
 
 PAPER: 
 
 PS 46-71 Flame-resistant paper and paperboard (supersedes CS 203-56) 
 
 R 46-55 Tissue wrapping paper 
 
 PARTICLEBOARD : 
 
 CS 236-66 Mat-formed wood particleboard 
 
 PASTE : 
 
 PS 64-75 School paste (part revision of CS 130-60 and R 192-63) Z297. 2-1975* . . 
 
 PERLITE : 
 
 PS 23-70 Horticultural grade perlite 
 
 PIPE: 
 
 PS 34-70 Fluorinated ethylene-propylene (FEP) plastic lined steel pipe and 
 
 fittings 
 
 PS 35-70 Poly(vinylidene fluoride) (PVF 2 ) plastic lined steel pipe and fittings. 
 
 CS 5-65 Pipe nipples: brass, copper, steel, and wrought iron 
 
 PLYWOOD : 
 
 PS 1-74 Construction and industrial plywood (revision of PS 1-66) A199 .1-1974*. 
 PS 51-71 Hardwood and decorative plywood (supersedes CS 35-61) 
 
 RAMPS: 
 
 CS 202-56 Industrial lifts and hinged loading ramps (errata) 
 
 SAFETY REQUIREMENTS: 
 
 PS 66-75 Safety requirements for home playground equipment Z304.1* 
 
 PS 72-76 Toy Safety 
 
 SCREENING : 
 
 CS 138-55 Insect wire screening (amended 1961) 
 
 CS 248-64 Vinyl-coated glass fiber insect screening and louver cloth 
 
 SHAPES : 
 
 CS 257-63 TFE-Fluorocarbon(polytetrafluoroethylene) resin molded basic shapes 
 
 (errata) 
 
 R 222-46 Hot-rolled carbon steel bars and bar-size shapes 
 
 *American National Standard designation 
 
 PRICE 
 
 .25 
 
 M 
 
 M 
 
 .25 
 
 .25 
 
 .35 
 
 M 
 
 M 
 .45 
 
 .25 
 
 M 
 
 .35 
 
 .25 
 
 .85 
 .30 
 
 .45 
 
 M 
 
- 7 - 
 
 3.1. List by Subject (continued) 
 
 SHEET : 
 
 PS 17-69 Polyethylene sheeting (construction, industrial, and agricultural 
 
 applications) 
 
 PS 31-70 Polystyrene plastic sheet 
 
 CS 201-55 Rigid polyvinyl chloride sheets 
 
 CS 239-63 TFE-Fluorocarbon (polytetrafluoroethylene) resin sheet 
 
 SIDING: 
 
 PS 55-72 Rigid polyvinyl chloride) (PVC) plastic siding 
 
 PS 60-73 Hardboard siding A135 . 6-1973* 
 
 R 78-50 Iron and steel roofing, siding, and ridge roll 
 
 STEEL PRODUCTS: 
 
 R 264-61 Standard sizes of oil-hardenable flat, ground tool steel stock 
 
 STOPCOCKS : 
 
 PS 28-70 Glass stopcocks with polytetrafluoroethylene (PTFE) plugs 
 
 CS 21-58 Interchangeable taper-ground joints, stopcocks, stoppers, and 
 
 spherical-ground joints (amended 1961) 
 
 TABLEWARE : 
 
 PS 24-70 Melamine dinnerware (alpha-cellulose-filled) for household use 
 
 PS 25-70 Heavy-duty alpha-cellulose-filled melamine tableware 
 
 TAPE: 
 
 PS 3-66 TFE-Fluorocarbon (polytetrafluoroethylene) resin skived tape 
 
 R 114-63 Gummed kraft paper sealing tape 
 
 TEXTILES : 
 
 CS 11-63 Moisture regains of cotton yarns 
 
 CS 191-53 Flammability of clothing textiles 
 
 THERMOMETERS : 
 
 PS 39-70 Clinical thermometers (maximum-self -registering, mercury-in-glass). . . 
 
 TIMBER: 
 
 PS 56-73 Structural glued laminated timber (supersedes CS 253-63) A190. 1-1973*. 
 
 TOYS: 
 
 PS 72-76 Toy Safety 
 
 TUBING: 
 
 PS 43-71 Fluorinated ethylene-propylene (FEP) plastic tubing 
 
 PS 47-71 Heat-shrinkable fluorocarbon plastic tubing 
 
 PS 52-71 Polytetrafluoroethylene (PTFE) plastic tubing 
 
 WATER CLOSETS: 
 
 PS 6-66 Trim for water-closet bowls, tanks and urinals (dimensional standards). 
 
 YARNS: 
 
 CS 11-63 Moisture regains of cotton yarns 
 
 PRICE 
 
 M 
 .40 
 
 .65 
 
 M 
 
 M 
 
 .30 
 
 *American National Standard designation 
 
3.2. Numerical Lists : PRICE 
 VOLUNTARY PRODUCT STANDARDS: 
 
 PS 1-74 Construction and industrial plywood A199. 1-1974* -85 
 
 PS 3-66 TFE-Fluorocarbon (polytetraf luoroethvlene) resin skived tape M 
 
 PS 4-66 Standard stock light-dutv 1 3/8- and 1 3/4-inch thick flush-tvpe interior 
 
 steel doors and frames M 
 
 PS 5-66 Porcelain enameled formed steel plumbing fixtures M 
 
 PS 6-66 Trim for water-closet bowls, tanks and urinals (dimensional standards) . . M 
 
 PS 8-67 Grading of abrasive grain on coated abrasive products M 
 
 PS 13-69 Uncored slab urethane foam for bedding and furniture cushioning M 
 
 PS 14-69 Salt packages -25 
 
 PS 15-69 Custom contact -molded reinforced-polyester chemical-resistant process 
 
 equipment -40 
 
 PS 16-69 Types and sizes of forms for one-way concrete joist construction .25 
 
 PS 17-69 Polyethylene sheeting (construction, industrial, and agricultural 
 
 applications) M 
 
 PS 20-70 American softwood lumber standard .40 
 
 PS 23-70 Horticultural grade perlite .25 
 
 PS 24-70 Melamine dinnerware (alpha-cellulose-filled) for household use M 
 
 PS 25-70 Heavy-duty alpha-cellulose-filled melamine tableware M 
 
 PS 26-70 Rigid poly(vinyl chloride) (PVC) profile extrusions M 
 
 PS 27-70 Mosaic -parquet hardwood slat flooring M 
 
 PS 28-70 Glass stopcocks with polytetraf luoroethylene (PTFE) plugs M 
 
 PS 29-70 Plastic heat-shrinkable film 30 
 
 PS 30-70 School chalk (part revision of CS 130-60 and R 192-63) M 
 
 PS 31-70 Polystyrene plastic sheet M 
 
 PS 32-70 Hinged interior wood door units M 
 
 PS 33-70 Polytetrafluoroethylene (PTFE) plastic lined steel pipe and fittings ... M 
 
 PS 34-70 Fluorlnated ethylene-propylene (FEP) plastic lined steel pipe and 
 
 fittings M 
 
 PS 35-70 Poly(vinylidene fluoride) (PVF2) plastic lined steel pipe and fittings . . M 
 
 PS 36-70 Body measurements for the sizing of boys' apparel M 
 
 PS 38-70 Steel bi-fold closet door units, frames, and trim .45 
 
 PS 39-70 Clinical thermometers (maximum-self-registering, mercury-in-glass) .... .65 
 
 PS 40-70 Package quantities of green olives M 
 
 PS 41-70 Package quantities of instant mashed potatoes M 
 
 PS 42-70 Body measurements for the sizing of women's patterns and apnarel . . . . . .65 
 
 PS 43-71 Fluor inated ethylene-propylene (FEP) plastic tubing M 
 
 PS 44-71 Paper ice bag sizes M 
 
 PS 45-71 Body measurements for the sizing of apparel for young men (students) . . . .30 
 
 PS 46-71 Flame-resistant paper and paperboard .25 
 
 PS 47-71 Heat-shrinkable fluorocarbon plastic tubing M 
 
 PS 48-71 Package quantities of cubed, sized, crushed, and block ice .25 
 
 PS 49-71 Portable picnic coolers .25 
 
 PS 50-71 Package quantities of toothpaste .25 
 
 PS 51-71 Hardwood and decorative plywood .30 
 
 PS 52-71 Polytetrafluoroethylene (PTFE) plastic tubing .30 
 
 PS 53-72 Glass-fiber reinforced polyester structural plastic panels M 
 
 PS 54-72 Body measurements for the sizing of girls' apparel M 
 
 PS 55-72 Rigid polyvinyl chloride) (PVC) plastic siding M 
 
 PS 56-73 Structural glued laminated timber A190. 1-1973* M 
 
 PS 57-73 Cellulosic fiber insulating board A194. 1-1973* 40 
 
 PS 58-73 Basic hardboard A135. 4-1973* 40 
 
 PS 59-73 Prefinished hardboard paneling A135. 5-1973* 45 
 
 PS 60-73 Hardboard siding A135. 6-1973* . '40 
 
 PS 61-74 Plastic containers (jerry-cans) for petroleum products MH17. 1-1974* ... .45 
 
 PS 62-74 Crading of diamond powder in sub-sieve sizes Z300. 1-1974* .55 
 
 PS 63-74 Latex foam mattresses for hospitals Z255. 1-1975* .50 
 
 PS 64-75 School paste Z297. 2-1975* .'35 
 
 PS 65-75 Paints and inks for art education in schools Z297. 1-1975* [ .'35 
 
 PS 66-75 Safety requirements for home playground equipment Z304 . 1-1976* .45 
 
 *American National Standard designation 
 
3.2. Numerical Lists (continued) FRICE 
 
 VOLUNTARY PRODUCT STANDARDS: 
 
 PS 67-76 Marking of gold-filled and rolled gold plate articles other than watch 
 
 cases 
 
 PS 68-76 Marking articles made of silver in combination with gold 
 
 PS 69-76 Marking of articles made wholly or in part of platinum 
 
 PS 70-76 Marking articles made of karat gold 
 
 PS 71-76 Marking of jewelrv and novelties of silver 
 
 PS 72-76 Toy Safetv 
 
 COMMERCIAL STANDARDS: 
 
 CS 5-65 Pipe nipples: brass, copper, steel, and wrought iron M 
 
 CS 11-63 Moisture regain of cotton yarns M 
 
 CS 21-58 Interchangeable taper-ground joints, stoococks, stoppers, and spherical- 
 ground joints M 
 
 CS 46-65 Hosiery lengths and sizes excluding women's M 
 
 CS 75-56 Automatic mechanical -draft oil burners designed for domestic 
 
 installations M 
 
 CS 98-62 Artists' oil paints M 
 
 CS 130-60 Color materials for art education in schools (see PS 30-70 for chalk). . M 
 
 CS 132-46 Hardware cloth M 
 
 CS 138-55 Insect wire screening M 
 
 CS 151-50 Body measurements for the sizing of apparel for infants, babies, 
 
 toddlers and children (for the knit underwear industry) M 
 
 CS 191-53 Flammability of clothing textiles M 
 
 CS 192-53 General purpose vinvl plastic film M 
 
 CS 201-55 Rigid polwinvl chloride sheets M 
 
 CS 202-56 Industrial lifts and hinged loading ramps M 
 
 CS 209-57 Vinyl chloride plastics garden hose M 
 
 CS 227-59 Polyethylene film M 
 
 CS 234-61 Measurements for stretch socks and anklets M 
 
 CS 236-66 Mat-formed wood part icleboard M 
 
 CS 239-63 TFE-Fluorocarbon (polvtetrafluoroethvlene) resin sheet M 
 
 CS 242-62 Standard stock commercial 1 3/4-inch thick steel doors and frames. ... M 
 
 CS 243-62 Stainless steel plumbing fixtures (designed for residential use) .... M 
 
 CS 245-62 Vinvl -metal laminates M 
 
 CS 246-62 Steel chain link galvanized fence fabric M 
 
 CS 247-62 TFE-Fluorocarbon (polvtetrafluoroethvlene) resin flexible hose (wire 
 
 braid reinforced) M 
 
 CS 248-64 Vinvl-coated glass fiber insect screening and louver cloth M 
 
 CS 257-63 TFE-Fluorocarbon (polvtetrafluoroethvlene) resin molded basic shapes . . M 
 
 CS 268-65 Hide trim pattern for domestic cattlehides M 
 
 CS 269-65 Aluminum allov chain link fencing M 
 
 CS 274-66 TFE-Fluorocarbon (polvtetrafluoroethvlene) resin sintered thin coatings 
 
 for dry film lubrication M 
 
 SIMPLIFIED PRACTICE RECOMMENDATIONS: 
 
 R 2-62 Bedding products and components M 
 
 R 3-60 Metal lath (expanded and sheet) and metal plastering accessories .... M 
 
 R 46-55 Tissue wrapping paper M 
 
 R 78-50 Iron and steel roofing, siding, and ridge roll M 
 
 R 114-63 Gummed kraft paper sealing tape H 
 
 R 163-48 Coarse aggregates (crushed stone, gravel, and slag) M 
 
 R 192-63 Crayons and related art materials for school use (tynes, sizes, packaging, 
 
 and colors) (chalk covered bv PS 30-70) M 
 
 R 222-46 Hot-rolled carbon steel bars and bar-size shapes M 
 
 R 257-55 Thermal conductance factors for preformed above-deck roof insulation . . M 
 
 R 264-61 Standard sizes of oil-hardenable flat, ground tool steel stock M 
 
 ISLC1MM r,'BS-DC 
 
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 LYRASIS Members and Sloan Foundation 
 
 http://www.archive.org/details/listofvoluntarypOOunit 
 
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 National Bureau of Standards 
 
 Washington. DC. 20234 
 
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