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  • Digitized Collection (this link takes you to the collection's overview and finding aid, with links out to the digitized content)
    H. Bentley Hahn Personal Papers

    Post Office Department employee; developed the ZIP Code for mail addressing. Materials relating to the development and implementation of the Zone Improvement Plan (ZIP Code).

  • Digitized Photographic Image
    Photograph, H. Bentley Hahn at the "Zip Code Symposia"
    H. Bentley Hahn Personal Papers16 March 1965

    Photograph of United States Postal Inspector H. Bentley Hahn standing behind a table at the ZIP Code Symposia. Handwritten on verso is, "H Bentley Hahn, 'ZIP Code Symposia,'" and stamped on verso is, "Mar 16 1965, Photo Laboratory, US Post Office, Pittsburg, Pa."

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