John T. Bregger papers include biographical information; personal and professional correspondence; notes, papers, records and memorabilia from his elementary and high school education in Bangor, Michigan, (1903-1913) from his studies at Michigan Agricultural College (now Michigan State University) (1913-1923; 1954-1967), and from his graduate studies at Cornell University (1921-1922) includes his Masters Thesis on Pomology; news clippings written by Bregger or collected for his personal interests (1922-1977); manuscripts by Bregger on agricultural topics; and miscellaneous directories, membership cards, and programs.