American Congregational minister. Editor-in-Chief for the Illustrated Christian Weekly and Christian Union, later called the Outlook. Through his periodical work, Abbott sought to provoke reform among the middle and upper classes. Strong opponent of slavery. At the end of the Civil War he became the executive secretary of the American Union Commission, later known as the American Freedmen's Union Commission in New York.
 
TLS - Typewritten Letter Signed, one page, on Outlook letterhead, dated March 1909.  Interesting content.
 
Early in his ministry, Abbott held to conservative theology. But, as he matured, his emphasis shifted to the emerging liberal theology that had been influenced by the cultural modernism of the late 19th century.