25 June 59 Dear Josh; I recall you once asked if a deficiency of lactase[?] were known. There is a report in The Lancet of May 30th of two patients (sib) who may have such a defect. The authors are Holzl, Schwartz and Sutcliffe, page 1126. May I have a reprint of your recent article in Science--"Genes and Antibodies"? Thanks. With best regards, Yours truly, Barton