Scope and Contents The Guoping Zhao research notebooks (1984-1992; 3.8 cubic feet) include research and laboratory notes compiled by Zhao for his dissertation, “The trpB8 mutation of Escherichia coli tryptophan synthase.” Types of materials include laboratory logs, test results, and other materials chronicling Zhao’s work, most of which are kept in their original binders. The collection is presented chronologically, except in cases where binders were labeled as a series or needed to be rehoused for preservation...