Papers, digital files, thesis, dissertation, administrative files related to Alexander's career and administrative positions, creation and development of Public Lands History Center, research for teaching American women's history, American history, American environmental history, the history of sexuality in America, the historiography of modernity, and the history of Mexico. Papers related to work on projects for Rocky Mountain National Park, Shenandoah National Park, Scotts Bluff National Monument, Fort Collins Utilities, and the Colorado Water Conservation Board are also present.