- Kartografiska institutet, AB.1
- Kennet and Avon Canal Company1
- Kenyon Company (Des Moines, Iowa)1
- Lapie, M. (Pierre), 1779-18501
- Larcom, Thomas A. (Thomas Aiskew), 1801-18791
- Laurie, Richard Holmes1
- Lithuanian National Council (U.S.)1
- Lizars, Daniel, 1760-18121
- Lobeck, A. K. (Armin Kohl), 1886-19581
- London Geographical Institute1
- Madureira Beça, José A. F. de1
- Makarova, V. M1
- Matthews-Northrup Works1
- Mejer, Johannes, 1606-16741
- Moll, Herman, -17321
- Mukhin, Major General1
- N. & S.S. Jocelyn (Firm)1
- Nantiat, Jasper1
- Naples (Italy). Ispettorato Risanamento e Fognatura1
- National Geographic Society (U.S.)1