Creator
- Losey, F. H. (Frank Hoyt), 1870-19316
- Louis C. Wagner & Company1
- Louis E. Neuman & Company Litho1
- Louis Heltman Company1
- Louis de la Parte Florida Mental Health Institute2
- Louisville & Nashville Railroad1
- Lounsberry, Vernon L.1
- Loving Committed Network (Orlando, Fla.)1
- Lowden, Bob4
- Lowry, Sumter de Leon, Jr., 1893-19853
- Lowry, Willie1
- Lozano, Pendas, and Company1
- Luce Turnier, 1924-19941
- Lucitt, Raymond1
- Lucner Lazard, 1928-19985
- Lue, Gim Gong (1860-1925)1
- Lueders, William L.1
- Luis Zamorano Gonzalez1
- Luna, Don Tristan de1
- Lupu, Nathan1