This subseries consists primarily of the correspondence of George E. Ellis, as well as some financial and other miscellaneous papers and printed matter. The subseries is arranged in two chronological sequences, 1773-1895 and 1812-1894 (the second was formerly a bound volume of tipped-in manuscripts), but both sequences contain letters by many of the same individuals. Correspondents include Charles Francis Adams, Jr.; Henry W. Bellows; Andrew Bigelow; Charles Deane; F. Gordon Dexter; George N. Eaton; Edward Everett; Frederick A. Farley; Nathaniel L. Frothingham; Octavius B. Frothingham; Ezra Stiles Gannett; Ellen M. Gifford; George S. Hale; Thomas W. Higginson; George Frisbie Hoar; Oliver Wendell Holmes; Houghton, Mifflin & Co.; John Jay; Levi Lincoln; Samuel K. Lothrop; George H. Moore; George R. Noyes; Samuel Osgood; John G. Palfrey; Theodore Parker; Francis Parkman; J. Parkman; George Putnam; Eliza Susan Quincy; Josiah Quincy; Chandler Robbins; Cornelia Van Rensselaer Thayer; George Ticknor; Henry W. Torrey; Charles W. Upham; James Walker; Robert C. Waterston; Justin Winsor; Robert C. Winthrop; Alexander Young; Edward J. Young; and many others.

Among the family members represented are George's wife Lucretia Goddard (Gould) Ellis, son John H. Ellis, daughter-in-law Grace Atkinson (Little) Ellis, brother Rufus Ellis, brothers-in-law Benjamin Apthorp Gould and Horace McMurtrie, sisters-in-law Mary Apthorp (Quincy) Gould and Louisa Goddard (Gould) McMurtrie, and niece Lucy. Included are many letters from Lucretia Ellis to Mrs. Eager, probably Eliza Eager, the mother of George Ellis's first wife, as well as letters from Eliza Eager to George. The disbound volume also contains deeds for pews in the New South Meeting House and requests for prayers.

The subseries also contains a box of index cards (Box 13A) listing most of Ellis's correspondents, arranged alphabetically. Each card describes a single letter. Researchers looking for correspondence of a specific individual may want to consult these cards to find the dates of letters.

This subseries contains manuscript addresses, sermons, and lectures by Ellis. Many of the sermons include annotations on when and where they were delivered.

This subseries contains the diaries of George E. Ellis, kept primarily at Charlestown and Boston, including 8 line-a-day diaries in printed almanacs, 1833-1842; a volume entitled "Original Thoughts &c," 1835-1869; 7 volumes documenting his trip to Europe, 1838-1839; and 25 pocket diaries, 1858-1894. The line-a-day diaries contain brief entries, primarily noting various churches where he preached each week, but also including some entries related to his Harvard education and lectures attended. The volume entitled "Original Thoughts" is partly a memoranda book with notes on his reading and religious reflections, 1835. Diary entries in that volume date from 1836 and 1839-1869 and describe his daily activities, news of family members, etc. Ellis's trip to Europe, 1838-1839, is covered in 7 volumes, including 5 diaries, one memoranda book, and one manuscript sightseeing guide entitled "Sketch of a Tour thro. Europe." The 5 travel diaries contain detailed descriptions of sights seen in England, Ireland, Scotland, the Netherlands, Belgium, Germany, Switzerland, Italy, and France. The 25 pocket diaries, 1858-1894, document Ellis's daily activities, social calls, news of family members, his writing work, and his participation in local organizations.

The subseries also contains one diary of Lucretia Goddard Gould before her marriage to Ellis, kept primarily in Roxbury and Boston, Mass. Entries describe Goddard and Gould family matters, social calls, lessons, her thoughts on sermons she heard, and her efforts at self-improvement. The volume also contains Latin exercises from Mr. Weisse's school, 1845, and miscellaneous memoranda.

This subseries consists of volumes related to the Harvard Church in Charlestown, Mass., where Ellis preached from 1840 to 1869. Included are two lists of pew owners, records of the Ministry at Large, 16 small paperbound volumes documenting Ellis's visits to members of the parish, and an undated list of parish members with some annotations.