U.S.-Mexico Border Militarization and Army Activity During Revolution and Interwar Period, 1910s-1930s

Large photograph archive, circa 1910s-1930s, documenting U.S. and Mexican military presence along the Rio Grande border and in Sinaloa during a period of revolution, intervention, and military modernization. The photographs depict soldiers, fortifications, and daily military activity across multiple locations, providing primary-source visual evidence for the study of U.S.-Mexico border tensions, the Mexican Revolution, and interwar military development. One photograph identified en verso as taken at the "United States Immigration Station on the Rio Grande River - Border Service - 1916" situates the archive within the period of the Mexican Revolution and the U.S. Punitive Expedition, while other images extend into the 1920s and 1930s, reflecting continued military presence and surveillance. Archive comprises 22 vernacular silver gelatin photographs ranging from approximately 3.25 x 5.5 inches to 4.5 x 6.5 inches, several with manuscript annotations en versos and studio stamps including "Laboratorio Vega, Mazatlán, Sin." and "La Foto, Madero 42." Images include U.S. soldiers positioned atop sandbag fortifications with rifles, standing at border outposts, and posing beside military vehicles including an early Dodge touring car. Mexican Army scenes depict officers and enlisted men in varied uniforms, including kepis and high-collared tunics, assembled in formations, occupying trenches, and constructing earthen defenses. A photograph inscribed "12º Rgto., Mazatlán, Sin. Marzo 1929" identifies the 12th Infantry Regiment during a coastal inspection. Additional images show cavalry units riding in formation across fields, soldiers resting near agave plants, and encampments along beaches with troops engaged in labor or recreation. One aerial photograph taken from a biplane captures a valley settlement, while another image shows a rural structure marked "U.S. 19" on its roof, suggesting identification or surveillance use. Across the archive, soldiers appear in both formal and informal groupings, sometimes posed in relaxed settings with visible gestures of camaraderie. These photographs document a period of sustained militarization along the U.S.-Mexico border and within northern Mexico following the upheaval of the Mexican Revolution and subsequent stabilization efforts. The presence of both U.S. Border Service personnel and Mexican Army units illustrates parallel and overlapping military activities, including patrol, construction, and occupation of strategic terrain. The imagery of trenches, transport, and aerial observation reflects evolving military practices in the early twentieth century, while the combination of formal and informal scenes provides insight into daily life within these environments. Surface wear to several prints; overall very good condition. A concentrated visual record of binational military activity and borderland conditions during a formative period of regional conflict and modernization.…