1. Jeffreys, Sir Harold / [Norman Robert Campbell].

Original Offprint – Review by British Mathematician and Astronomer, Sir Harold Jeffreys, on two books on Relativity and Physics by Norman Robert Campbell: “Physics, the Elements” and “Modern Electrical Theory – Chapter XVI: “Relativity”.

Philosophical Magazine, 1923, Octavo. 4 pages. Original Offprint. Very good condition with some minor signs of wear. From the library of Percy Bridgman student, Gerald Holton.

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.

3. Milne, E.A. [Edward Arthur].

The Fundamental Concepts of Natural Philosophy.

Edinburgh, Oliver & Boyd, 1943. Quarto (17,5 cm x 25,5 cm). 14 pages. Original Offprint. Very good condition with some minor signs of wear. One corner bumped. From the library of Percy Bridgman student, Gerald Holton.