Abstract This collection consists of two typewritten manuscripts (1968, undated) of Photographer on an Army Mule (also titled Shadow Catcher on an Army Mule), a biographical study of Christian Barthelmess. The manuscripts were written by Maurice Frink in collaboration with Casey E. Barthelmess Sr. Also included in the collection is a letter (1971) to Casey Barthelmess from Joseph Strittmatter re photographs (now housed in the Photograph Archives); a photocopy of a letter to Casey from May Billing re...