From the Elizabeth Harrington Photograph Collection (PH-00291). Inscription with image reads: "Entrance to Potosi Mine 1917. Sam Rowe foreman and son Cecil. Cecil attended the Las Vegas High School."
From the KLVX Steamboats on the Colorado Photograph Collection (PH-00156). Written on photo sleeve: "Salt mine. (Colorado River area)." Handwritten on verso: "Courtesy Special Collections UNLV."