Woodbury and Ellen Hardy family letters 1856-1868 (bulk 1856-1866)
Additional Descriptive Data
Horace Mann papers: Samuel G. Howe ALS regarding raising funds for a statue for Horace Mann (May 1, 1860)
James S. Schoff Civil War letters and documents collection: Orestes A. Brownson letter to Samuel G. Howe (September 13, 1862)
The Duane Norman Diedrich collection contains letters by Julia Ward Howe.
The Clements Library holds several books and pamphlets signed by Samuel Gridley Howe. More information is available on the University's online catalog.
Stuckey, Kenneth. "Howe, Samuel Gridley." American National Biography Online. Oxford University Press, 2000. DOI: 15-00349.
VanBurkleo, Sandra F., and Mary Jo Miles, "Howe, Julia Ward." American National Biography Online. Oxford University Press, 2000. DOI: 15-00348.
Who Was Who in America: Historical Volume, 1603-1886. Revised Edition. Marquis Who's Who, 1967.