University of Michigan, 1957-2005 (2.8 linear feet) is arranged into four sub-series, Correspondence, Departmental Materials, Grants and Research, and Teaching Materials. Correspondence, 1957-2005 (1.3 linear feet), arranged alphabetically and chronologically, consists of extensive incoming and outgoing correspondence with biochemists both domestically and internationally. Correspondents include alumni and leading chemists such as Nancy Nossal and Nobel laureate Har Gobind Khorana. Also of note is an autobiographical account of Greenberg's life and career in the 2005 correspondence. Departmental Materials, 1957-1995 (0.2 linear feet), arranged alphabetically, consists of records relating to the department and several University of Michigan Committees. Within this subseries, the folder Dissertation Committee includes compilations of dissertation abstracts as well as dissertation committee policies. Grants and Research, 1957-2001 (0.8 linear feet), arranged alphabetically and by grant, consists of grant applications, annual grant reports, research proposals, and records relating to his research associates. Included grant materials primarily focus on Greenberg's research into DNA, bacteriophage infection, and enzyme formation. This series includes the original 1956 grant application for Enzyme Formation in Phage-Infected Bacteria, a research project started during Greenberg's sabbatical in Newcastle, England while a member of Case Western Reserve's faculty and continued at the University of Michigan. Correspondence related to the Newcastle sabbatical is included in the Pre-University of Michigan Correspondence sub-series. The Teaching Materials sub-series, 1959-2002 (0.6 linear feet), arranged alphabetically, consists of course evaluations, exams, labs, lecture notes, and syllabi.