Fifty Years of X-Ray Diffraction (free online version)

The 1962 book, Fifty Years of X-Ray Diffraction, dedicated to the International Union of Crystallography on the occasion of the commemoration meeting in Munich, July 1962, by P.P. Ewald (editor), and numerous crystallographers has been digitized and put on the web as a free site by the ICU.

Visit: www.iucr.org/iucr-top/publ/50YearsOfXrayDiffraction/index.html 

This historical source includes, among much else, reminiscences by W. L. Bragg, C. G. Darwin, K. Lonsdale, H. Mark, A. L. Patterson, L. Pauling, A. V. Shubnikov, and many others.