50.1, image 1 (loose image)Unidentified desert. (Photo mounted on page is labeled as 50 #1 (50.1, image 2). Photo with description matching the online inventory is in a separate photo sleeve.; 50.2 A mule train pulling three wagons.; 50.3 Four unidentified people standing in a river or lake.; 50.4 Unidentified desert with house in background.; 50.5 Four unidentified people standing in a river or lake.; 50.6 Unidentified desert. Loose photo of several people standing behind a bi-wing plane found between pages 49 and 50. Back of the photo is labeled as 63 3, however page 63 has all photos accounted for.

'Compiled by J.T. McWilliams from official county records, U.S. Land Dept. surveys, railroad co. field maps and many personal surveys. Made in 1927 by J.T. McWilliams, C.E.' Includes township and road districts, school districts, mining districts, railroads, wagon roads, trails, springs and artesian wells. Scale [ca. 1:316,800. 1 in. to approx. 5 miles] (W 116°--W 114°/N37--N35). Relief shown by hachures. Blueline print. Library's copy 1 has one area outlined by hand in red. Library's copy 2 has school districts outlined in red and green pencil and labeled in pencil by hand.

Photograph in lower left corner of page shows miners underground moving hand-held light sources to create circles of light in a prolonged photographic exposure, a technique called light painting.