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[Staff signatures on the 1986 sesquicentennial photograph]
[Staff signatures on the 1986 sesquicentennial photograph]
Image caption on page 116 of the book US National Library of Medicine: "The library celebrated 150 years of public service in 1986. Staff gathered on its front steps for a sesquicentennial photograph. Staff signed a commemorative copy of this photograph."
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The National Library of Medicine believes this item to be in the public domain. (More information)