| Racks, Secondary | 1394 |
| Radiators, Hughes | 624 |
| Radiators, Lumihous | 603 |
| Rail Bond Tester | 318 |
| Railway Cut-Outs, D. & W | 1069 |
| Railway Telephone Apparatus | 92 |
| Ranges, Hughes | 614 |
| Ranges, Junior No. 6 | 620 |
| Rapid Fire Bits | 1477 |
| Rapid Fire Drills, Diamond | 1477 |
| Reamers | 1480 |
| Rear Safety Signal | 392 |
| Receivers | 105 |
| Receptacle Base | 984 |
| Receptacle Outlet | 962 |
| Receptacles and Plugs, Fielding | 1134 |
| Receptacles, Base Board | 1007 |
| Receptacles, Box Cover | 1077 |
| Receptacles, Bryant | 826, 858, 866 |
| Receptacles, Bulls Eye | 876 |
| Receptacles, Candelabra | 857 |
| Receptacles, Car | 976 |
| Receptacles, Chain Pull | 1075 |
| Receptacles, Cleat, Porcelain, P & S | 966967 |
| Receptacles, Conduit Box | 850, 853, 926 |
| Receptacles, Decorative Cleat | 852 |
| Receptacles, Decorative, P & S | 963 |
| Receptacles, Decorative, Porcelain, P & S | 971 |
| Receptacles, Flush | 868, 927, 984, 1011 |
| Receptacles, Flush, Bryant | 871 |
| Receptacles, Hubbell, Wall | 922 |
| Receptacles, Indicating Heater | 931 |
| Receptacles, Interchangeable | 862 |
| Receptacles, Key | 1075 |
| Receptacles, Keyless | 1076 |
| Receptacles, Lamp | 920 |
| Receptacles, Minature | 857 |
| Receptacles, Mogul | 950 |
| Receptacles, Newgard | 743 |
| Receptacles, Outlet Box | 953, 956, 963 |
| Receptacles, Outlet Box, P & S | 953 |
| Receptacles, P & S | 960 |
| Receptacles, Pilot Lamp | 1006 |
| Receptacles, Porcelain | 848, 961, 968 |
| Receptacles, Porcelain Angle | 926 |
| Receptacles, Porcelain, P & S | 961, 968 |
| Receptacles, Rosette | 856 |
| Receptacles, Sign | 850, 962 |
| Receptacles, Sign, P & S | 963 |
| Receptacles, Surface | 984, 987 |
| Receptacles, Wall | 925 |
| Receptacles, Wall, Porcelain | 955 |
| Receptacles, Weatherproof | 855 |
| Recorder, Time | 459 |
| Recording Aremeters | 338 |
| Recording Milli-Voltmeters | 337 |
| Recording Shunt Ammeters | 337 |
| Recording Voltmeters | 331 |
| Recording Wattmeters | 334 |
| Rectifiers, A.C | 361 |
| Rectifiers, Mechanical | 360 |
| Rectifiers, Mercury | 250, 257, 362 |
| Reducers, Socket | 858, 975 |
| Reel Jacks | 1446 |
| Reels, Pay Out | 1441, 1444 |
| Reels, Take-up | 1444 |
| Reels, Wasson | 1445 |
| Reels, Wire | 1441, 1498 |
| Reels, Wire, Jumper | 1441 |
| Reflectolytes | 680 |
| Reflector Fixtures, Angle | 686 |
| Reflector Helmet | 727 |
| Reflectors, Benjamin | 690, 692 |
| Reflectors, Cardboard | 728 |
| Reflectors, Celluloid | 728 |
| Reflectors, Enameled Steel | 698 |
| Reflectors, Glass | 730 |
| Reflectors, Incandescent | 643 |
| Reflectors, Metal | 699, 798 |
| Reflectors, Metal, Ivanhoe | 798 |
| Reflectors, Midget | 727 |
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| Reflectors, Music Stand | 670 |
| Reflector Sockets | 692 |
| Reflectors, Orchestra | 670 |
| Reflectors, Picture | 670 |
| Reflectors, Poke Bonnet | 727 |
| Reflectors, Porcelain | 733 |
| Reflectors, Silk | 728 |
| Reflectors, Steel | 704 |
| Reflectors, Tin | 729 |
| Regent Film Sockets | 775 |
| Registers, Pen | 477 |
| Registers, Tally | 1495 |
| Regulators, Heat | 609 |
| Regulators, Constant Current | 262 |
| Regulite | 356 |
| Reinfcreed Cords | 1309 |
| Relay Boxes | 70 |
| Relays, A.C | 212 |
| Relays, A.C. Overload | 209 |
| Relays, D.C. and A.C | 208 |
| Relays, D.C., Reverse Current | 210 |
| Relays, Solenoid Control | 212 |
| Relays, Telegraph | 533 |
| Renewals, Battery | 424 |
| Rescue Equipment, Mine | 91 |
| Resin Core Solder | 805 |
| Resistance Boxes | 326, 330 |
| Resistance Lamps | 636 |
| Resistance Units | 145 |
| Resonators | 536 |
| Resonators, Portable | 536 |
| Rheostats | 136, 138, 146, 1500 |
| Rheostats, Battery Charging | 146, 157 |
| Rheostats, Field | 156 |
| Rheostats, Field, D.C | 149 |
| Rheostats, Speed Regulating | 138 |
| Ribbon, Fuse | 1059 |
| Ridge Irons | 1371 |
| Rigid Pipe Conduit | 1090 |
| Ring Bolts | 1429 |
| Ringers, Telephone | 103 |
| Rings, Rubber | 933 |
| Rings, Socket | 737, 858 |
| Rings, Suspension | 687 |
| Rittenhouse Conduit Benders | 1486 |
| Ritter Soldering Coppers | 1492 |
| Rods, Anchor | 1409 |
| Rods, Duct, Empire | 1447 |
| Rods, Fibre | 816 |
| Rods, Ground | 1412 |
| Rods, Hard Rubber | 822 |
| Rollers, Cable | 1447 |
| Rope, Banner Core | 785 |
| Rope Clamps | 785 |
| Rope Cleats | 785 |
| Rope, Ebony Wire | 785 |
| Rope, Trimmers | 785 |
| Rosette Receptacles | 856 |
| Rosettes | 897, 959, 1076 |
| Rosettes, Bracket | 860 |
| Rosettes, Bryant Porcelain | 859, 861 |
| Rosettes, Fuseless | 949 |
| Rosettes, Hubbell | 897 |
| Rosettes, National Metal Moulding | 1076 |
| Rosette Sockets, Bryant | 841 |
| Rosettes, P & S | 959 |
| Rosettes, Porcelain | 859, 972 |
| Rosettes, Pull Switch | 912, 914, 947 |
| Rotary Flush Switches | 1002 |
| Rotary Switches | 384, 990 |
| Rubber Boots | 1463 |
| Rubber Casing | 933 |
| Rubber Covered Wires | 1301 |
| Rubber Gloves | 1462 |
| Rubber Matting | 822 |
| Rubber, Quick Cure | 366 |
| Rubber Rings | 933 |
| Rubber Rods | 822 |
| Rubber Sheets | 822 |
| Rubber Tubing | 822 |
| Rubber, Vulcanizing | 366 |
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