This 34 reel microfilm set of the U.S. Land Office's tract books for North Dakota documents original land transactions from the 1870s to about 1920. Records of subsequent transactions are recorded at the Register of Deeds office at the county level.
Several reels contain portions of South Dakota.
A finding aid with maps to assist the researcher is available in the Institute Research Room, while the microfilm is located in the NDSU Libraries Microforms Area. The actual papers for each land transaction are located at the National Archives and Records Administration. Copies of the form are available from the address given below. Minimum identification required includes name of entryman, land located in what state, and approximate date of entry. National Archives and Records Administration 7th and Pennsylvania Ave.