This collection consists of a single item: a memorandum and account book belonging to Charles A. Ronne, which is digitized here.

Ronne's writings reveal that he worked in gold smelts and brass analyses and also taught French. Most of book remains blank suggesting that he only used the book for a few months and then discarded it. One page of the notebook written in pencil and headed Mar. 14 is in a different hand and records measurements for a man's suit, suggesting that a book was in someone else's hands at one point.