The 1880 Billings County, North Dakota, Census contains 53 pages (census images) in Enumeration District 101. This county was enumerated twice: The first set of pages is numbered 101-05 through 101-31; the second set of pages have the same page numbers on the film, and these have been assigned the filenames 101A-05 through 101A-32, and they have been placed in the "repeat" directory. (Pages 101-01 through 101-04 are Morton County.) There are no pages 101A-15 or 101A-16 on the microfilm. The name of each image file is the page number. (In the case of 1880, 1900, 1910, and 1920 census, the file name includes both the Enumeration District and the page number.)