Letters exchanged in 1975 and 1976 between Lorenzo A. Richards and Walter H. Gardner concerning a historical survey of soil physicists

Letters exchanged in 1975 and 1976 between Lorenzo A. Richards and Walter H. Gardner concerning a historical survey of soil physicists: (1) Note dated 9 February 1976 from Lorenzo A. Richards to Walter H. Gardner accompanying his biographical details in response to Gardner's request; (2) Letter (undated) from Walter H. Gardner at Washington State University, Pullman, to Lorenzo A. Richards, requesting biographical information for a paper on the historical highlights of soil physics that he will give at a conference; (3) "Historical Survey of Soil Physicists," form for gathering biographical details; (4) Letter dated 19 November 1975 from R. C. Dinauer, managing editor for the Soil Science Society of America Proceedings, to Walter H. Gardner, sending list of past Soil Physics Division chairmen; (5) Letter from Walter H. Gardner published in the Society publication; (6) Further copies of the survey form; (7) Note dated 3 March 1976 from Lorenzo A. Richards to his son Paul L. Richards re shipping some Dacthal to him (page 1)