Have sent under separate cover two reprints of the Enzyme crossover paper. If you need more, I can send them on since I have
a few left. I'm certainly glad to hear about the Lac "alleles" crossing over. It means that [...] isn't
so special. Pontecorvo wrote me that he appears to have similar cases in [...]. I'm working on another focus at present
which from the preliminary results looks like another [...] case.
Glad you are planning to be in Minneapolis for we hope to attend the meetings too. Our regards to Crow, Irvin et. al.