Collection
- Boston and Maine Railroad Company Records, 1889-19041
- Caleb S. Hallowell Papers, 18431
- Captain C. W. Chadwick Papers, 1873-18881
- Chapin, Day, and Ely Lumber Mill Records, 1774-17891
- Charles Fisher Papers, 1831-18411
- Charles I, King of England Papers, 16421
- Charles K. Gardner Papers, 1835-18601
- Clove Branch Railroad Company Records, 1869-18931
- Cora Eastman Papers, 1877-18861
- D. Ayers Blakeslee Papers, 1861-18671
- Daniel Hawks Papers, 1930-19511
- Daniel Tomlinson Papers, 18421
- David M. Clark Papers, 1804-18121
- Duxbury and Cohasset Railroad Company Records, 1871-18721
- E. Melton Miller Papers, 1904-19101
- E.C.M. Rand Papers, 19091
- East Freetown, New York, Railroad Freight Records, 1891-19011
- Ebenezer Fitch Papers, 1812-18461
- Edward E. Lane Records, 1889-18901
- Edward H. Benedict Papers, 1832-18531