Frederick John Foakes-Jackson (1855-1941) was an Anglican minister, church historian, dean of Jesus College Cambridge (1895 - 1941), and Briggs Professor of Christian Institutions at Union Theological Seminary (1916-1934), Emeritus (1934). The collection contains correspondence, sermons, personal notes, biographical records, a notebook, and memorabilia reflecting Jackson's academic life during his time at Union Theological Seminary and the impact of his death.

Correspondence includes letters, 1865-1891, from the American Bible Revision Committee and the British Committee on Bible Revision; notes and lectures; travel diaries, 1844-1890; photograph album; and scrapbook.

Consists of correspondence, memoranda, committee minutes and reports, and miscellaneous printed materials including pamphlets, articles, and clippings. Among topics included are the Auburn Affirmation; Committee on Protestant Liberties; protest against the action of the 1927 General Assembly of the Presbyterian Church in the U.S.A.; the Fundamentalist-Modernist controversy within the New York Presbytery; and the Presbyterian Advance.

Samuel Macauley Jackson (1851-1912) was a UTS alum of 1873, Presbyterian minister, church historian, and New York University professor. The collection contains notes on the lectures of Roswell Dwight Hitchcock and Henry Boynton Smith taken by Jackson while at Union, as well as translations of the sermons of Swiss thinker Huldrich Zwingli, with additional correspondence of Robert Handy on the index of Jackson's translations.