Stamp Chats: US High-Denomination Envelopes 1861-1894

Wisconsin-based Dr. Dan Undersander, a U.S. postal stationery expert, spoke at the October 2020 Chicago Philatelic Society online meeting about high-denomination envelopes ranging from 1861-1894. His talk included a discussion of usage, scarcity, rates, and numbers sold. His examples feature a variety of colors and postal markings and demonstrate mailings…

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