Files may contain any of the following documents: correspondence, clippings, reports, raw data, and other relevant items. Several of these subjects correspond with those in Series V: Research & Reference Materials - Clippings. Of interest is a letter (photocopy) signed by Ansel Adams on his letterhead, dated 9/26/79, in the "General Correspondence" file of the Interagency Task Force on Mono Lake (ITF) subject category.