10 May, 1968
Dear Papa:
Enclosed is my manuscript "Properties of a Temperature-Sensitive Radiation-Sensitive Mutant of Escherichia coli" for transmission to the Proceedings. I have incorporated your comments, and a few others made by my colleagues. I think it is not a bad little paper.
I enclose the original, with a set of photographs. In addition, I am sending a copy, in which the photographs are copied as well. If this isn't satisfactory, let me know. I would suggest that the Materials and Methods section should be set in small type; perhaps that is automatic.
Thank you very much.
Much love
Crellin