In 1865 and 1866 most of Wyoming was part of the Idaho Territory.

"On the 24 rolls of this microfilm publication are reproduced bound volumes of tax assessment lists for the collection districts established for the State of Kentucky. The number of collection districts was set at four by an Executive order dated August 8, 1862; this number was later changed to six and then to nine by Executive orders dated September 10, 1864, and January 25, 1866, respectively. The lists were created in the offices of assessors and assistant assessors of Internal Revenue during the period 1862-66. ... These records are among Records of the Internal Revenue Service, Record Group 58, in the National Archives. ... The records ... were prepared for filming by Clarence F. Lyons, who also wrote these introductory remark ..."--Page 1, 3.