Selected by William Coleman, this collection contains correspondence from William Bateson to his wife, Catharine, and to his colleagues, such as Francis Galton, E. Roy Lankester, Alfred Newton, and Charles Scott Sherrington; lectures given between 1897-1904; and some genealogical and miscellaneous material. This note is currently under review for revision.

This collection is primarily correspondence and also notes on experiments concerning the cytology research of Lewis and his wife, Dr. Margaret Reed Lewis, at Johns Hopkins University, Carnegie Institution of Washington, and finally at the Wistar Institute of Anatomy and Biology in Philadelphia. There is significant material relating to his professional society activity in the American Association of Anatomists (President, 1934-1936) and the International Society for Experimental Cytology.