"Wald [George]" Photocopies of articles and offprints, annotated by Smith, comprising: "Human Vision and the Spectrum" by G Wald, in 'Science', vol. 101, number 2635, (29 June 1945); "A System for Microspectrophotometry Employing a Commercial Recording Spectrophotometer" by Paul K Brown, in 'Applied Optics', vol. 51, (September 1961); "The Receptors of Human Color Vision" by G Wald, in 'Science', vol. 145, (4 September 1964); offprint of "Iodopsin" by G Wald, P K Brown, and P H Smith, from 'The Journal of General Physiology', vol. 38, number 5, (20 May 1955). 1945-1964