From the Nevada rim of Black Canyon, a sweeping bird's-eye Chrome-era photograph captures the upstream face of Hoover Dam in all its Art Deco grandeur — four massive intake towers stand half-submerged in the cobalt waters of Lake Mead, the great concrete arch curving away between rust-red canyon walls, the elegant switchback observation point road coiling in the foreground like a Moderne ornament. Mailed on August 6, 1951 from Kingman, Arizona, the writer — who signs as part of the Lawrence family — dashes off a breathless road-trip bulletin to Mac and his wife in Indianapolis: still 470 miles from their destination, planning to rise at 4 a.m. to cross the desert, "every body fine & sure having a good time." The 1-cent George Washington definitive stamp ties the card neatly to the early postwar travel boom.