Label in lower right coner: 'Union Pacific System. Los Angeles & Salt Lake Railroad Co. Form 30, No. 6-4002. Las Vegas, Nevada. Location of proposed water line to be installed along Track No. 8. Scale 1" = 100'. Chief Engineer's Office, L.A. & S.L.R.R. Co., Los Angeles, Caif. May 1, 1931. Dwg. No. 36103.' Handwritten in red pencil on label: 'W.O. 9798.' Accompanies: Work Order Authority for Extensions and Additions to Exisiting Property, Los Angeles & Salt Lake Railroad Co., May 1, 1931. (Box 25 Folder 80-12).

Flow measurements of the Las Vegas Big Spring and Little Spring and well in July 1931 and July 1934. Measurements of reservoir and settling basin on July 17, 1934 and July 19, 1934, before and after passing of city ordinance to reduce water waste. Estimated consumption by refrigeration systems. Estimated per capita water consumption in Las Vegas, Fallon, Winnemucca, and Lovelock.