World History Maps Interactive Historical Atlas of the Civil War, detail page for:

Montana, Territory May 26, 1864 - after Jun 25, 1865

Sidney Edgerton US Governor, May 26, 1864 - after Jun 25, 1865

Montana and Western Dakota transferred from US Dept. of The Northwest to Dept. of the Missouri, Feb 17, 1865
Thomas F. Meagher US Acting Governor, after Jun 25, 1865 - after Jun 25, 1865