Series I. Academic Papers, 1926-1962 , contains material describing both Mansfield's education and his teaching activities. Included are his notes and papers from Texas Christian University and the University of Chicago while he was a student of English Literature. Mansfield's teaching is reflected in lecture notes, syllabi, exams and correspondence documenting his activities at Williams College, Jamestown College, Duke University and the Universidad Nactional de Buenos Aires.
Series II. Writing, 1926-1978, includes chronologically-arranged drafts, reprints and associated material regarding the poetry, essays, etc. written by Mansfield primarily during the 1960s and 1970s. A draft of his notes for the edition of Moby Dick, which he co-edited ca. 1952, is also included here.
Series III. Correspondence contains letters, primarily of a personal nature, arranged alphabetically by author covering a period from 1937 to 1948. During this time, Mansfield carried on an extensive correspondence with many of his students, the majority of whom were in the United States Navy during World War II. There was evidently a great rapport between Mansfield and his students. Many were graduates of the Navy V-12 program held at Williams during the War and a number, including George Carlin, Frederic Beck and others, were unable to return to Williams after the War as they had wished because of crowded conditions. Mansfield's letters and friendships with these individuals, however, continued even after college and the War. Letters from members of Mansfield's family are also included here. General business-related correspondence and miscellaneous letters are appended to the alphabetical series.
Series IV. Personal and Miscellaneous Papers, 1929-1975, includes collected publications, articles and photographs, as well as correspondence and a report concerning the Chapin Library's Mansfield Fund.