(Disneyland, 1970s-80s) A construction brownline featuring details for the "Opera House" and its adjacent buildings on Main Street at Disneyland. The brownline is titled "Elevations" and features the original imagery dated 4-8-55, although this brownline was most likely used during later construction or maintenance between the 1970s and 1980s. Measuring 42" x 64", the brownline is in good condition with some edge wear from use, including some wrinkling and tearing around the border.