Memorandum of agreement between Dr Thomas Chalmers and William Pickering, bookseller, for the publication of his treatise, `On the adaptation of External Nature to the Moral and Intellectual Constitution of Man`, in Pickering`s autograph., 1832., Ch.54. Miscellaneous documents, including burgess and guildry tickets, contracts, discharges and tacks., Ch.38-55. National Library of Scotland Archives and Manuscripts Division. https://manuscripts.nls.uk/repositories/2/archival_objects/188 Accessed April 19, 2024.