Askin's library, one of the first known collections in Michigan, is documented in annual inventories of his estate dated 1776, 1777, 1778, 1779, 1787, and ~1808, plus an 1821 inventory of Askin's estate titled "Inventory of Property Real and Personal Belonging to the Estate of the Late John and Archange Askin, Sandwich." Each of these contains a section headed "Writing Implements, Books, and etc." - these list the books by author and/or short title and an assigned monetary value. The inventories, held at several archival repositories in Canada, are not thoroughly transcribed in Widder's article; more data (including assigned values) could be retrieved from them in future.
