Black obsidian, side-notched point. Tip is broken. D. Bradley 02/10/99

Black obsidian leaf-shaped biface. M. Christopher 01/08/99

Black obsidian scraper. D. Bradley 02/07/99

Black obsidian, bifurcate point. D. Bradley 02/05/99

Black obsidian bifurcate point with serrated edges. D. Bradley 02/05/99

Black obsidian, side-notched point. There is matrix adhering to one side. D. Bradley 01/11/99

Coarse-grained black obsidian lanceolate point with broken tip. Brown matrix adheres to one side. K. Peterson 11/23/98

Black obsidian biface. There is an adhering matrix on both sides. 11/30/98 D. Bradley

Black obsidian, side-notched point with concave base. D. Bradley 01/29/99

Black obsidian side-notched point with a flat contracting base; the entire point is curved to the right of the dorsal side. M. Christopher 10/16/1998. Dr. Dennis Jenkins, University of Oregon, sent this specimen to Northwest Research Obsidian Studies Laboratory, Corvalis, OR for analysis (on loan 11/30/98 - 4/9/99). A portion of this specimen was removed for obsidian hydration. The source of raw material was determined to be Cougar Mountain. Northwest Research Obsidian Lab placed a paper tag in the specimen bag with the following information: [Lab Contract #] BO-98-91 [Catalog #1989-57/35-M-] 75 [Collection Name] Bergen [Analysis] Specimen No: 35 [Source Location] Cougar Mountain See also the following report from Northwest Research Obsidian Studies Lab for more detailed analytical data: Skinner, Craig E. and Jennifer J. Thatcher 1998 "X-ray Fluoresence Analysis of Artifact Obsidian from the Bergen Site, Fort Rock Lake Basin, Lake County, Oregon." Northwest Research Obsidian Studies Laboratory, Report 98-91, Corvalis OR. Dr. Jenkins' interpretation of the data was reported at the Northwest Anthropological Conference, 4/8/99 - 4/10/99 in his paper entitled, "Obsidian Characterization and Hydration Results of the Fort Rock Basin Prehistory Project." D. Bradley 04/12/99.