May 2, 1957 Dear Joshua, I am very sorry that you will not come to Harvard. But I can understand your desire to remain in an environment where you are already content -- I am sure, however, that if you do have a change of heart that something both definite and good can be arranged here. You probably know that Cy Levinthal is coming to MIT -- so with Bernie Davis, the outlook for microbiology seems good. Nevertheless this department must soon find someone to teach microbiology in Harvard College -- It is remarkable how few good (over) [END PAGE ONE] [BEGIN PAGE TWO] people there are to choose among. Again I am very sorry that you will not come my best regards to Esther Jim