Forces in Molecules (Author's offprint from Physical Review, Second Series, Vol. 56, No. 4, August 15, 1939.)
Lancaster, PA & New York: American Institute of Physics, 1939.
First edition. Rare author's offprint copy signed by Richard Feynman with his nickname, "Best Regards / Dick." in blue ink on the upper left corner. 340-343 pp. Bound in publisher's self-wraps. Very Good+, horizontal fold, light wear and toning to wraps, tiny tear to right margin of front wrap, small area of nibbling to rear wrap. Quite scarce in this issue, given by the publisher to the author to give to his friends and colleagues.
The Nobel laureate in Physics and famed popularizer of the discipline's undergraduate thesis at MIT, published in the well-esteemed Physical Review when he was just 21. It proposes what became known as the Feynman-Hellmann theorem, a groundbreaking development in quantum mechanics.
Price: $22,000