Collection consists primarily of documentation of Civil War claims handled by John P. Camp, a counselor for claimants in St. Louis. These claims, dated 1861 to 1868, relate to services rendered and supplies provided to the United States, and include vouchers, receipts, correspondence, affidavits, special orders, and loyalty oaths. The collection also contains business papers of Camp, which do not appear to be related to the claims process, and personal papers of the Camp family.