Silver Quest: Nine readings by Alan Probert, index by Lillie M. Probert. The journal of the West, 14(2), April 1975.

Silver Quest: Nine readings by Alan Probert, index by Lillie M. Probert. The journal of the West, 14(2), April 1975. , Box: 33. Alan & Lillie M. Probert Collection, 33036851. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/279587 Accessed September 26, 2026.