Vol. I:European Exploration to 1890, including acquisition of land, territorial years and statehood --

Vol. II:1890 to 1943, including the early days of statehood and a history of Wyoming's counties --

Vol. III:1943 to 1974, including a study of equality in the Equality State --

Vol. IV:1974 to 1990, including sections on government, education, economy, culture, and the Wind River Reservation --

Vol. V:1991 to 2007, including recent developments in Wyoming's history --

Centennial ed, 1990: v. 5, pt. 1. Guide to the county archives of Wyoming --

v. 5, pt. 2. Guide to the state government and municipal archives of Wyoming.