The map titled “Yosemite Transportation System Motor Car Lines in Yosemite National Park and California’s High Sierra – Tioga Pass Route – ‘YTS’ Tour” illustrates a historic network of motor car routes used to transport early 20th-century tourists through Yosemite and the surrounding High Sierra. Centered on the scenic Tioga Pass Route, it highlights key destinations such as Yosemite Valley, Tuolumne Meadows, Glacier Point, and Wawona, as well as connections to the park’s eastern entrance via State Route 120. The map likely includes topographical features, historic lodges, and camps, serving both as a travel guide and a promotional piece celebrating the era of early automobile tourism in one of America’s most iconic national parks. The Yosemite Transportation System (YTS) and its motor car tours were most active during the 1920s to the 1940s.