This collection consists of four documents pertaining to Company E, 12th Regiment Michigan Infantry of the United States Army, all signed by Captain W. S. Bostwick in November of 1865 after the end of the American Civil War. The documents are a Statement of Charges on Muster and Pay Rolls; a Quarterly Return of Ordinance and Ordnance Stores Received, Issued, and Remaining on Hand; an Abstract of Expenditures; and an Invoice of Stores Turned Over.