| Laboratory Plates | 608 |
| Ladels, Pouring | 1493 |
| Lag Screws | 1419 |
| Lamp Changers | 746 |
| Lamp Colorings | 638 |
| Lamp-Cord, Armored, Flexible | 1096 |
| Lamp Cord Connectors | 1087 |
| Lamp Cords | 1309 |
| Lamp Cords, Flexible | 1309 |
| Lamp Grips | 695 |
| Lamp Guards | 697, 743 |
| Lamp Nets | 753 |
| Lamp Outfits, Decorative | 639 |
| Lamp Receptacles | 920 |
| Lamp Reflectors, Incandescent | 643 |
| Lamps, Automobile | 376, 379, 632 |
| Lamps, Bed | 663 |
| Lamps, Carbon | 636 |
| Lamps, Decorative | 631 |
| Lamps, Desk | 668 |
| Lamps, Flaming Arc | 253 |
| Lamps, Gas Filled Mazda | 689 |
| Lamps, Gem | 635 |
| Lamps, Hand, Portable | 375 |
| Lamps, Hylo-Economical Turn Down | 640 |
| Lamps, Incandescent | 625 |
| Lamps, Luminous Arc | 254 |
| Lamps, Mazda, Miniature | 632 |
| Lamps, Novelty | 631 |
| Lamp Sockets | 377 |
| Lamps, Orchestra | 669 |
| Lamps, Picture | 669 |
| Lamps, Portable | 660 |
| Lamps, Pulpit | 669 |
| Lamps, Resistance | 636 |
| Lamps, Sign | 634 |
| Lamps, Type C Mazda | 684 |
| Lamp Testing Meters | 315 |
| Langamo Ampere-Hour Meters | 292 |
| Lanterns, Dry Battery | 548 |
| Lanterns, Electric | 554 |
| Laurent Cherry Pulley Blocks | 1455 |
| Lead Bushings | 1101 |
| Lead Encased Copper Wires | 1307 |
| Leading and Connecting Wires | 1501 |
| Leather Nail Heads | 1147 |
| Leather Pouch | 1466 |
| Leather Tool Bags | 1467 |
| Lee Pins | 1373 |
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| Lens Box Arc Lamps | 642 |
| Lever, Ignition Switch | 383 |
| Lever Switches | 382 |
| Lever Switches, Detachable | 383 |
| Lighting Arc | 253 |
| Lighting Cable, Packard | 370 |
| Lighting Fixtures, Benjamin | 690 |
| Lighting Fixtures, White | 673 |
| Lighting Outfits, Bicycle | 393 |
| Lighting Outfits, Ford | 380 |
| Lighting Outfits, Motorcycle | 393 |
| Lighting Plants, Electric | 236 |
| Lighting Reflectors | 708 |
| Lighting Specialties | 667 |
| Lighting Switches | 381 |
| Lighting Systems, Incandescent | 260 |
| Lighting Units | 722 |
| Lights, Automobile | 388 |
| Lights, Cargo | 696 |
| Line Crossing Clamps | 1368 |
| Lineman's Carts | 1445 |
| Lineman's Fault Finder and Ohmmeter | 317 |
| Lineman's Shields | 1463 |
| Lineman's Test Sets | 104 |
| Lineman's Tools | 1450, 1454, 1464 |
| Lineman's Torches | 1492 |
| Linen Tape | 810, 1496 |
| Line Suspension Clamps | 1365 |
| Line Wire Protectors | 1370 |
| Link Fuses | 1059 |
| Links, Connecting | 1415 |
| Links, Fuse | 1057 |
| Lock Guards | 698 |
| Locking Bushings | 1362 |
| Locking Connectors | 1362 |
| Locknuts | 1142 |
| Locks, Pole | 785 |
| Lock Switches | 1010 |
| Locust Pins | 1387 |
| Long Distance Spot Lights | 643 |
| Long Handle Shovels | 1436 |
| Long Handle Spoons | 1436 |
| Long-Saut Cable Clamps | 1429 |
| Loom flex | 1093 |
| Low Tension Cable, Packard | 369 |
| Loys | 1438 |
| Lubricant, Commutator | 806 |
| Lug Hooks | 1439 |
| Luminous Radiator Heating Units | 634 |
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