Recorder sitting while working with tabulating machine; umbrella man shadingleveling instrument; and rodman holding rod vertical over turning point. Pictureshows how line sight clears recorder with inclined tripod. Party ofJ.D. Crichton.
4/5/2019 9:09:13 AM
Date: 1920
Credit: C&GS; Season's Report Crichton 1920
Location: California, Southern