In this episode we look at an iconic series of U.S. stamps, the so-called "Fourth Bureau Issues"—a quintessential example of early twentieth-century American definitives produced by the Bureau of Engraving and Printing (BEP) starting in 1922. This series ushered in major changes in both the speed and scale of stamp production—moving from flat plate to rotary presses—as well as the kinds of images that found their way onto these gorgeous issues. We're also joined by a special guest to learn a little more about the production details.

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Note: We've received some wonderful listener mail since the recording of this episode, so if you've se ...