From Union Pacific Railroad Collection (MS-00397). The scales are noted in the drawing. The bottom corner says, "Union Pacific System L.A. & S.L.R.R. Standard 4 Room Bunk House Located West Of Caliente. Elevations, Sections. Asst. Chief Engineer's Office Los Angeles Calif. Drawn By A.J.R. Traced By A.J.R. Checked By F.W.G. Date Dec 22-26. Scales As Shown. Revised. Drawing No 15659-B".