Source:
L. Tom Perry Special Collections, Harold B. Lee Library, Brigham Young University ; William Gates catalog of purchased books; MSS 279; William Gates papers; L. Tom Perry
Source:
L. Tom Perry Special Collections, Harold B. Lee Library, Brigham Young University ; William Gates list of Ephraim George Squier books; MSS 279; William Gates papers; L.
Source:
L. Tom Perry Special Collections, Harold B. Lee Library, Brigham Young University ; Samuel Bent and George Washington Harris list of people who hold receipts for books;
Source:
L. Tom Perry Special Collections, Harold B. Lee Library, Brigham Young University ; Samuel Bent account of subscriptions for printing books; Vault MSS 76; Newel Kimball
Source:
L. Tom Perry Special Collections, Harold B. Lee Library, Brigham Young University ; Account books in Spanish; MSS 279; William Gates papers; L. Tom Perry Special