United States, National Archives, Freedmen's Bureau, Officer's Manual

The Bureau of Refugees, Freedmen and Abandoned Lands was created March 3, 1865 and was an agency within the War Department. Its record keeping was similar to other agencies in the department of the "book period." Examples of record keeping manuals published during this time period include the following: These volumes may also include recording keeping practices similar to those used by personnel of the Freedmen's Bureau.
 * Rules for Keeping the Principle Record Books used at the Adjutant General's Office; and for Making the Principle Reports, Returns & Required for the Adjutant General's Office. Washington: Government Printing Office, 1862
 * Instructions for Keeping the Records and Transacting the Clerical Business of the War Department. Washington, Government Printing Office, 1876.

To assist military personnel and civilians assigned to the Bureau an officer's manual published by the War Department in 1866. The manual was published "...for the information and government of the Officers of this Bureau." The manual identifies the records, forms, reports, etc. bureau agents and other personal were required to create and use in the day to day operations of their offices. Sample images of bureau forms begin on page 29 or image 40.
 * "Each Assistant Commissioner, or other officer or agent of the Bureau, having charge of an office, will preserve and accurate record of his official acts.

The manual contains the following sections:
 * Officers' manual : Bureau of Refugees, Freedmen, and Abandoned Lands Washington, 1866
 * Article I - Book keeping and official correspondence
 * Article II - Accounts and expenditures of public property
 * Article II - Disbursements of public funds
 * Article IV - Medical Department
 * Article V - Subsistence
 * Article VI - Miscellaneous Provisions

See also [https://www.familysearch.org/ark:/61903/3:1:3Q9M-C9TD-53KY-D?i=2&wc=73RQ-375%3A1513902402%2C1514313331&cc=2427901 Col. Samuel Thomas. Assistant Commissioner for State of Mississippi. '' Digest of Orders and Instructions to Sub-Commissioners. Bureau of Refugees, freedmen and Abandoned Lands. Vicksburg, Miss.: Freedmen's Bureau Press Print, 1866. NARA M826, Roll 28, Target 9, DGS 7677404 image 458.] This volume provided guidance and direction to bureau agents in Mississippi from the state Assistant Commissioner. Organization of the Bureau General View of Duties Forms of Business Book-Keeping Administration of Justice, Orphans, Vagrancy, Marriage, Medical Department, Conclusion,
 * "The duties of a Sub Commissioner of the Freedmen's Bureau are delicate, difficult, numerous and important."
 * "Every officer of this Bureau, in charge of an office, will be required to keep an exact and full record of all business transacted. That these records may be correct and uniform, the following instruction, on the basis of those issued by the War Department to Adjutant Generals and others of kindred duties, will be strictly obeyed:"
 * Letters Received; Letters Sent; Endorsement and memoranda; Indexing; Reports; (Advice to Freedmen - Circular No. 2 - Jan. 2, 1866); Contracts

Additional Sources
The following wiki article Freedmen's Bureau Record Types is based on the glossary found in the National Archives Preliminary Inventory of the records of the field offices of the Bureau of Refugees, Freedmen, and Abandoned Lands : record group 105'' 3 volumes. Washington, D.C. : National Archives and Records Service, 1973 compiled by by Elaine Everly and  Willna Pacheli.