- Edward H. Cahill Papers, 1909/19761
- Erwin Hoge Will Papers, 1918/19731
- Frank Horsfall, Jr., Papers, 1917/19731
- Frank J. Maher Papers, 1934/19861
- G. Grahame Duce Papers, 1920/19471
- George W. Litton Papers, 1927/19831
- Harry W. Sanders Papers, 1913/19811
- Howard S. Avery Papers, 1913/19961
- Huron, Ohio, Railroad Construction Photographs, 1912/19371
- Irving J. Good Papers, 1925/20041
- J.M. Butterworth Family Papers, 1911/19631
- James Robbins Randolph Papers, 1922/19691
- John D. Clark Papers, 1923/19881
- John E. Duberg Papers, 1927/19801
- John T. Parsons Papers, 1910/20001