Names
- Knights Templar (Masonic order)1
- Knights of Pythias.1
- Ku Klux Klan (1915- )1
- Kuhns, Mary, 1945-1
- Kwok, Pui-lan1
- Lazarnick, Nathan.1
- Lincoln, Robert Todd, 1843-19261
- Litynski, Walter E.1
- Litynski-Jakubowski Co.1
- Lund, Barbara, 1964-1
- Lundblad, Barbara K., 1944-1
- Lundy, Mary Ann Weese, 1933-1
- MacGregor and Company.1
- Madison, James, 1751-18361
- Mahle, Katherine Austin, 1945-1
- Manning Bros.1
- Marlow, Eily, 1975-1
- Martin, Joan M. (Joan Marie)1
- Mary Elizabeth McCornack1
- Mazur, Anthony1