A yoke of rust-brown longhorn oxen stand patiently hitched to a weathered wooden cart, the massive spoked wheels and lashed timber frame framed against adobe walls under a vivid painted sky — a quintessential linen-era "picturesque Mexico" scene that border-town souvenir shops sold by the thousands in the 1930s and '40s. Curteich's "C.T. Art-Colortone" process gives the oxen's hides a warm tactile glow, the cart timbers a golden ochre, and the sky that impossibly saturated turquoise blue that defines the linen aesthetic. The reverse carries a San Antonio, Texas, postmark dated May 28, 1943 — wartime — and an intimate message from a traveler to "George" at a law firm in Elmira, N.Y., describing a pleasant week in San Antonio, a border run, and plans to return home. A red crayon cross is marked in the upper right corner of the card front, a common dealer or collection-sorting mark.