The Manhattan Project Heritage Preservation Association, Inc.
"Preserving, Exhibiting, Interpreting and Teaching the History of the Manhattan Project"
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The Manhattan Project Heritage Preservation Association, Inc. "Preserving, Exhibiting, Interpreting and Teaching the History of the Manhattan Project" |
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The Paul Filipkowski Collection
The Manhattan Project
Photo: MPP-PFIL-121 (800 x 448)
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First Day Cover Commemorating the 25th Anniversary of the First Controlled Nuclear Chain Reaction at the Univ. of Chicago - Postmarked Dec. 2, 1967 |