From high above the South Rim, the Grand Canyon unfolds in a sweeping panorama studded with white-labeled callouts identifying every major formation — the Tower of Set, Isis Temple, Cheops Pyramid, Shiva Temple, Zoroaster Temple, the Colorado River glinting far below — in one of the most informative and visually arresting canyon cards ever produced. This aerial view card, photographed by the American Museum of Natural History and distributed by J.R. Willis of Albuquerque, was manufactured by Curt Teich & Co. of Chicago (catalog no. 8A-H717), the dominant American linen postcard producer of the era. Postmarked Grand Canyon, 1938 (machine cancel visible, date legible as 1938 from the message), this card was written by a traveler named Ma (signed, affectionately abbreviated) to Harry in Washington, D.C., on September 23, 1938: "At Grand Canyon and it is a wonderful sight. Survived the Convention at Los Angeles. The heat was terrible. Hope you are all well." A vivid slice of late-Depression-era American travel, linking a political convention in L.A. to a restorative visit to the canyon.