Image: Robert F. Christy signature
Robert_F._Christy_signature.jpg (173 × 63 pixels, file size: 10 KB, MIME type: image/jpeg)
Description: Robert F. Christy's signature
Title: Robert F. Christy signature
Credit: Biographical Memoirs - Robert F. Christy
Author: Robert F. Christy
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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