1. Cunningham, B.B. (Burris) [Manhattan Project] / Werner, L.B. [Manhattan Project Veteran].

The First Isolation of a Synthetic Element 94 Pu 239 [Paper 1.8]. [Stamped: “Radiation Laboratory Reprint Number 1949 – 8 6”].

Radiation Laboratory, c. 1949. Octavo. pages 51 – 78 of the 1949-Reprint of the original Metallurgical Project Report from the years 1942 – 1943. With images and diagrams. Original Offprint / Stapled Wrappers. Very good condition with some minor signs of wear only. From the library of american physicist, Gerald Holton. Also included is Paper 1.9 by J.W.Kennedy / M.L.Perlman / E. Segre and A.C. Wahl – “Formation of the 50-Year Element 94 from Deuteron Bombardment of U238” and also Paper 1.10 by C.S.Garner / N.A.Bonner / G.T.Seaborg – “Search for Elements 94 and 93 in Nature – Presence of 94 239 in Carnotite” – [″This article was issued as a secret report in connection with the Plutonium Project in August 1942”].

2. McMillan, Edwin Mattison.

Clock Paradox of Relativity [Original, First Edition offprint from “SCIENCE, January 1958].

SCIENCE, 1958. Folio (21 cm x 28,5 cm). 3 pages. Original Offprint. Very good condition with some minor signs of wear and some fraying only. From the library of Percy Bridgman student, Gerald Holton.