Things to include here:

afeshbsa.sgm -- The preface HBS wrote for the 1858 revision of JH's autobiography: Truth Stranger Than Fiction: Father Henson's Story of His Own Life. With an Introduction by Mrs. H. B. Stowe. (Boston: John P. Jewett, 1858)

afaujha.sgm -- The material about Henson and Tom from Henson's third version of his autobiography -- i.e. Introductory Notes by Phillips and Whittier, Publisher's Preface and Henson's Chapter 25 "Mrs. Stowe's Characters" [An Autobiography of the Rev. Josiah Henson (Mrs. Harriet Beecher Stowe's "Uncle Tom"), From 1789 to 1879 (Boston: B. B. Russell, 1879)]. Mention here that Stowe's name appears a second time on title page, Preface still used, though last paragraph and date deleted.

afesjla.sgm -- The additional stuff prepared by John Lobb for the English and Canadian editions of the autobiography: i.e. (1)his Editorial Note, (2)his Conclusion, and (3)his Sketch of Mrs. H. Beecher Stowe.