(026655) Childs, Herbert. An American Genius: The Life or Ernest Orlando Lawrence, Father of the Cyclotron. New York: E. P. Dutton & Co., 1968. 1st Edition. Hardcover. 8vo. 576 pages. Very Good in Very Good DJ. B&W Photographs. Name rubber stamped on front endpaper, on the last page of the book and on the bottom edges . Lawrence (1901-1958) earned a Ph.D. at Yale University and taught physics at the University of California at Berkeley from 1929, where he built anddirected (from 1936) its radiation laboratory. In 1929 he developed the cyclotron, with which he accelerated protons to speeds high enough to cause nuclear disintegration. He later produced radioactive isotopes for medical use, instituted the useof neutron beams to treat cancer, and invented a colour- television picture tube. He worked with the Manhattan Project, converting the Berkeley cyclotron to separate uranium-235 by mass spectrometry. For his invention of the cyclotron, he was awarded a 1939 Nobel Prize (Lawrence, Ernest O., Physicists, Cyclotron)