A Kornberg 27 Mar '81 Dear Josh: I couldn't immediately find the source of inhibitor theory and use you asked about, but I did think of Judah Quastel and am enclosing an engaging reprint. He was certainly one of the earliest to think of and fashion an antimetabolite. Fond regards AK [stamped, THE ROCKEFELLER UNIVERSITY OFFICE OF THE PRESIDENT APR 2 1981]