January 14, 1941. Dear Linus: I have your letter of January 2nd and the proposal concerning the program for research in immunology. I am planning to come to Pasadena soon, probably arriving there on Monday, February 10th. According to present plans I shall be going to Palomar on Wednesday, the 12th. I also have a variety of other things to take care of, but I trust that you will be there during that period so that we may have a leisurely chance to discuss your proposal. It seems to me a very interesting and important suggestion, but I must confess that my present hunch is that it is distinctly over-venturous (from our point of view) to set up so large and so long a program until further exploratory work has been done. I also have a distinct curiosity as to the possible relation of this program to the interests in immunology which have previously been presented to us by Professor Sturtevant and for which we have made a small grant-in-aid. Very cordially, Warren