Hand-drawn, hand-colored and annotated map showing the 280 foot level of the Combination Mine. Printed on map: 'Mohawk, col. el. 5958.48; Hayes & Monnette No. 2, col. el. 5935.7; Hayes & Monnette No. 1, col. el. 5925.8; Truett, col. el. 5938.8; Combination, col. el. 5986.31.'
An unidentified person standing in front of a rock with petroglyphs drawn on it. Written on the slide: "CL-233. Brownstone Canyon. Clark County, Nevada."
From the Eileen Margaret Green Photograph Collection (PH-00229) -- Yellow Plug, view northeast. Handwritten on envelope, "Yellow Plug, view northeast. (from her MA thesis. A Cultural Ecological Approach to the Rock Art of Southern Nevada, GN 799 P4 G73x 1987a)". Handwritten on the back of the photograph, "Figure 4. Yellow Plug, view northeast."