On Twitty's autobiographical manuscript, particularly on the parts related to Spemann. Note on Bill Ballard's monograph of Amblystoma.
Short note on a recent publication by F. E. Lehmann on Physological Embryology.
Comment on a paper
Request for a recommendation letter for Judy Brunso-Bechtold for a Sloan Fellowship
Hamburger's sponsorship of Anne Bekoff's Alfred P. Sloan Research Fellowship and request for Betz to write a letter of support