Names
- Hill, Robert Thomas, 1858-1941.1
- Hillsdale College.1
- Hinsdale, Mary L.1
- Hinsdale, Mildred, 1871-1971.1
- Hobbs, William Herbert, 1864-1952.1
- Hollander, Jacob Harry, 1871-1940.1
- Hopkins, Albert J. (Albert Jarvis), 1846-1922.1
- Houston & Texas Central Railway Company.1
- Houston and Shreveport Railroad Company.1
- Houston, East and West Texas Railway.1
- Hubbard, Lucius L. (Lucius Lee), 1849-1933.1
- Hudson, Richard, 1845-1915.1
- Hull, Charles Henry, 1864-1
- Hyma, Albert, 1893-1
- Hyma, Albert, 1893-1978.1
- Illinois Central Railroad Company.1
- Illinois Tunnel Company.1
- International & Great Northern Railroad.1
- Interstate Commerce Commission.1
- Iowa Central Railway Company.1