Título: Signed First Day Cover.
Ejemplar firmado: Signed by Author(s)
In 1936 this German physicist joined Albert Einstein at Princeton's Institute of Advanced Study, becoming a valued assistant and collaborator in constructing the unified field theory; it was he who authored the first textbook on general relativity, "Introduction to the Theory of Relativity," for which Einstein provided an introduction; at Syracuse University from 1947 to 1982, he remained the leading proponent of Einstein's theories. Signed First Day Cover, 6½" X 3½", cancelled at Princeton, NJ, on March 4, 1979 and with "First Day of Issue" marked. Near fine. Single 15-cent "Einstein" stamp. No decorative cachet at left; no distracting recipient's name/address present. Bergmann's tiny, precise full signature in black ballpoint occupies the "sweet spot." Most unusual autograph from this unsung hero of relativity. Small portion of original transmittal envelope present. N° de ref. de la librería 21368
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Librería en AbeBooks desde: 11 de marzo de 1998
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Descripción de la librería: Main Street Fine Books & Manuscripts has been buying and selling quality books, autographs and ephemera since 1991. We specialize in general antiquarian, first editions, signed books and autographs and documents. We are members of the Antiquarian Booksellers' Association of America (ABAA), Universal Autograph Collectors Club (UACC) and The Manuscript Society.