The Blueprints and Drawings series (1902-1975) contain drawings and maps of railroad buildings including depots in Nevada, Utah, and California; employee cottages, houses, and hospitals; and other railroad operational buildings, maps, and surveys. Also included are drawings of plats of track, right of way, elevation, easements, highways and roads, water facilities, and pipelines. The types of drawings include blueprints, blue-line, brown-line, tracing paper, vellum, mylar, and linen. Architectural drawings include site plans, floor plans, elevations, roof plans, sections, and schematic details. Structural drawings include foundation details, framing plans, and structural connection details. Mechanical drawings include plans detailing air conditioning ductwork and machinery schematics.

This series also contains sets of original drawings by architect Gilbert Stanley Underwood for the lodges and other park buildings at the Southern Utah National Parks at Zion, Bryce Canyon, Cedar Breaks, and the North Rim of the Grand Canyon constructed between 1924 and 1928 by the Union Pacific Railroad and the National Park Service to develop resort facilities to enhance tourism and the railroad's passenger service.