The Robert H. Crabtree papers (1920-1999) sub-series contains an extensive account of Crabtree's career as a professor and archaeologist. Materials includes correspondence, photographic prints and negatives, reports, and notes of archeological surveys and excavations done in Southern California, Southern Nevada, Washington, Oregon, and Mexico. Collection includes resources such as field catalogs, proposals, newsletters, annual reports, workflow documentation, conference materials, and meeting minutes from various archaeological and anthropological societies and organizations. The subseries also includes class notes, dissertation drafts, and manuscripts used by Crabtree during his academic career. Digital files include field notes and reports.