The Walter Bracken and the Las Vegas, Nevada office sub-series (1828-1968) is comprised of information related to the development of Las Vegas, Nevada and Yermo, California, including land and water purchases and sales, company cottage leases, accounting, Board of Directors meetings, the Las Vegas Ranch and other documentation.

The General Manager, Manager of Properties, and Manager of Industrial Development in Los Angeles, California sub-series (1900-1976) consists of information related to the physical development of Union Pacific railroad towns and sites outside of Las Vegas, Nevada, including Yermo, California. Files include building leases, sales and purchases of land and water, accounting and other business practices, legislative matters, and industrial development along the Union Pacific rail routes.

The Receipt Books sub-series (1953-1954) contains the receipt books for the Las Vegas Land & Water Company's Las Vegas and Los Angeles offices.

The Photographs, Schedules, and Instruction Books sub-series (1905-1958) contains photographs of buildings and railway sections, maps, employee operations and instruction books, pay schedules, and related information.