Fonds consists of research material related to Butler’s Rangers. The material was compiled by Orlo Miller in the course of his research for the book Raiders of the Mohawk: the story of Butler’s Rangers, as well as an article, A New Roster of Lieut.-Colonel John Butler’s Corps of Rangers. A significant portion of the fonds contains correspondence from genealogists addressed to Miller after the publication of this article. An unpublished and unfinished manuscript providing a historical account of Butler’s Rangers titled A Lion at the Door is also included. Three small boxes holding index cards contain notes on the members of Butler’s Rangers, and are filed alphabetically by surname.