Names
- Jruks, J. W.1
- Kansas City Southern Railway.1
- Keweenaw Central Railroad.1
- Klise Lumber Company.1
- Knight, George W. (George Wells), 1858-1932.1
- Labadie, Jo, 1850-1933.1
- Lagonda Western Railway Company.1
- Lake County Railroad.1
- Lake George and Muskegon River Railroad Company.1
- Lake Superior and Ishpeming Railway Company.1
- Lathrop, Julia Clifford, 1858-1932.1
- Laughlin, J. Laurence (James Laurence), 1850-1933.1
- Lawton, Charles De Witt, 1835-1909.1
- Lehigh Valley Railroad Company1
- Lehigh Valley Railroad.1
- Lewis, David J. (David John), 1869-1952.1
- Little Miami Railroad Company1
- Lobdell-Bailey Manufacturing Company.1
- Logansport and Toledo Railway Company1
- Long Island Railroad Company1