Allen duPont Breck

• The Methodist, Evangelical, and United Brethren churches in the Rockies, 1850-1976
• Biology, history, and natural philosophy
• Cosmology, history, and theology
• From the Rockies to the world
• Great confrontations in Jewish history
• The Episcopal Church in Colorado, 1860-1963
• Tractatus de Trinitate
• William Gray Evans, 1855-1924
• Biology, history, and natural philosophy
• John Evans of Denver
• The centennial history of the Jews of Colorado
• The Episcopal Church in Colorado, 1860-1963 (The West in American history)