Letters sent by Browne to War Department officials, government officials, the treasury secretary, local special treasury agents, and businessmen about the shipment of goods and supplies, cotton, and other subjects relating to his duties as special supervising agent for the Treasury Department.

Letterbooks of correspondence sent and received by Browne and records relating to his duties as special supervising agent in the South. Letters in Vol. 1 were received by Browne. Vols. 2-4, labeled "department" on the spine, include letters sent by Browne to local special agents, Customs Commissioner Nathan Sargent, and Secretaries of the Treasury Salmon P. Chase, William P. Fessenden, and Hugh McCulloch. Vols. 5-6 include correspondence written by Browne to local special agents, mostly in the 4th Special Agency. Vols. 7-9 include letters written by Browne's secretaries regarding shipments of supplies and goods, business transactions, and information relating to the acquisition of seized property. Vol. 10 is a list of reports and communications sent by Albert G. Browne, Jr.

Material related to the financial aspects of Browne's position as special supervising agent. Included are receipts for confiscated property, expenditures, deposits, lists of captured and abandoned property, statistics of delivered cotton, quartermaster store lists, orders for subsistence stores, receipts for property captured aboard ships, abstract returns for the 4th and 5th Special Agency, and miscellaneous accounts, vouchers, and receipts.

Records of goods shipments; records of captured and abandoned property; invoice books; a stamp account book; sales of cargo of the ship Rebecca Hunt; unsold inventory and appraisal books for St. Helena, Ladies, and Port Royal Islands; certificate and expense books; and federal rules and regulations concerning abandoned property.