From Union Pacific Railroad Collection (MS-00397). The scales are noted in the drawing. The drawing states, "Gilbert Stanley Underwood And Co. Architects & Engineers. 730 So. Los Angeles St. Los Angeles Calif. Piping Plan For Hot Water. File No. 15684-S. Sheet No.19. Job No. 399. Date 8.10.27. A Club House For Union Pacific System Caliente Nevada."