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Start Over You searched for: Repository Science History Institute Archives Remove constraint Repository: Science History Institute Archives Creator United States Postal Service Remove constraint Creator: United States Postal Service Year 1950 to 1999 Remove constraint Year: <span class="from" data-blrl-begin="1950">1950</span> to <span class="to" data-blrl-end="1999">1999</span>

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James J. Bohning Philatelic Chemistry Collection, 1951-2003 (inclusive)

Held at: Science History Institute Archives [Contact Us]

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Michael A. Morgan Philatelic Chemistry Collection, 1994

Held at: Science History Institute Archives [Contact Us]

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Donald J. Cook – Percy Lavon Julian Stamp Collection, 1993

Held at: Science History Institute Archives [Contact Us]