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Discover a fascinating piece of history with this antique stereoview card from H.C. White Co., featuring a dramatic scene atop Mount Hood, Oregon. The stereograph, titled \"#10241 Signalling 15 miles into the Valley, from Summit of Mt. Hood, Oregon, U.S.A.,\" captures a group of surveyors or climbers engaged in signaling, likely with a heliograph or similar instrument, against a vast mountainous backdrop. This 3D view offers an immersive glimpse into early 20th-century exploration and surveying techniques in the American West.This stereoview card is a product of H.C. White Co., with its General Office in N. Bennington, Vt., U.S.A., and branch offices in New York, Chicago, and London. The card is marked with \"THE PERFECT STEREOGRAPH (Trade Mark.)\" and features patent information \"Patented April 17, \'03. Other Patents Pending.\" The image itself is copyrighted \"1904 by H.C. White Co.\", dating this stereograph to the early 1900s. It is presented on a curved cardboard mount, a common format for stereoviews of this era, designed to enhance the 3D effect when viewed through a stereoscope.
