- Unknown recipient (1 p. ALS on letterhead) — Feb. 20, 1893
- W. Irving Way (2 pp., ALS) — Nov. [?] 12, 1894 (pasted in Ballads & Lyrics of Old France, 1909)
- Unknown (c/o Messrs Crowell [Publishers], 4 pp., ALS) — Nov. 13, 1894
- Nathan Haskell Dole (2 pp., ALS) — Jan. 30, 1895
- W. Irving Way (3 pp., ALS) — Jan. 30, 1895
- Unknown (2 pp. to Smith & Sale?, ANS) ) — April 16 and April 17, 1895
- Frank Trainer (2 1/2 pp., ALS) — May 27, 1895
- Ch. Eadward Pratt (3 pp., ALS) — Nov. 14, 1895
- Charles S. Pratt – 9 letters:
- (3 pp., ALS w/envelope) — Dec. 12, 1896;
- (3 pp. w/ env.) — Nov. 13, 1897;
- (2 pp., ALS w. env.) — Dec. 31, 1897;
- (2 pp., ALS w/ env.) — Jan. 7, 1898;
- (2 pp., ALS w. envelope) — Feb. 21, 1898;
- (1 p., ALS w/ env.) — Feb. 25, 1898;
- (2 pp., ALS w/ env. & inserts) — April 10, 1898;
- (1 1/2 pp., ALS w/ env.) — May 6, 1898;
- (1 p., TLS w/ env. & hand-written reply from Pratt, & hand-written reply from Mosher) — Jan. 7, 1899.
- Moses F. Lobo (4 pp., ALS) — Nov. 23, 1895
- Unknown (3 pp., ALS) — Nov. 23, 1897
- Emilie Grigsby (7 pp., ALS) — Dec. 28, 1897
- Mr. Miller (2 pp., ALS) — Jan. 11, 1898
- [C. M. Glazier of Boston] (1p. ANS) — Nov 3, 1898
- Claire Butterfield (4 pp., ALS) — Jan. 27, [1900]
- Schleuning & Adams [Bindery] (1 p., TLS with holograph notes) — May 6, 1902
- Mr. Dix (2 pp., ALS) — June 9, 1903
- Miss Dunn (1 p., TLS) — Dec. 15, 1903
- Boardman (1 p., TLS) — Jan. 15, 1904
- Percival [Gustav Percival Wiksell] (2 pp., ALS) — Thursday [March 24, 1904]
- Gustav Percival Wiksel (4 pp., ALS) — Sept. 15, 1904
Images of: Page 1 | Page 2 | Page 3 | Page 4 - William Roberts (Rose Valley) (2 pp., ALS) — Dec. 7, 1904
- William Roberts (Rose Valley) (2 pp., ALS + inscribed photo) — Dec. 29, 1904
- [Gustav Percival Wiksell] (2pp., ALS) — Feb. 6, 1906
- Gustav Percival Wiksell (Postcard) — April 14, 1906
Images of: Front of Postcard | Back of Postcard - Col. Higginson (1 p., ALS) — Dec. 22, 1906
- Malcolm G. Anderson of London (1 p., TLS) — Feb. 16, 1907
- Boardman (2 pp., ALS) — March 27, 1907
- Mr. White (1 p., ANS) — April 12, 1907
- Miss Wolever (1 p., TLS) — Nov. 26, 1907
- Graves (1 p., ALS) — Sept. 14, 1908
- Frank H. Chase (1 p., TL unsigned) — Dec. 8, 1909
- Mr. White (1 p., TLS) — Dec. 12, 1910
- [To the Trade] Revised Trade Rates (1 p., printed letter) — Oct, 1, 1912
- H. M. Penrose, Hartford, CT (1 p., TL) — Sept. 20, 1913
- Elizabeth R. Butterworth (2 pp., TLS) — Jan. 28, 1914
- Elizabeth R. Butterworth (4 pp., TLS) — Aug. 19, 1914
- Mrs. S. F. Butterworth (2 pp., TL unsigned) — Nov. 3, 1914
- Paul E. Gray (1 p., TLS) — April 27, 1915
- Dr. G. P. [Gustav Percival] Wiksell (1 p., TLS) — Dec. 20, 1915
- A. O. Shaw (1 p., TLS w/ pencil notes by Francis O’Brien) — Christmas 1915
- William Tappan (1 p., TL unsigned) — Sept. 22, 1916
- Unknown recipient (1 p., ANS) — Dec. 23, 1916
- Frank M. Low (1 p., TL unsigned w/ envelope) — Sept. 19, 1917
- Hannah Watts ( p., ANS) — Dec. 24, 1921
- Miss Louise Van Dyke (1 p. TLS) — Dec. 27, 1921
- Unknown (1 p. TL) — [Dec. 1921]
- G. C. [George Charles] Williamson (1 p. TLS) –March 31, 1922
- Mr. L [Charles E. Lauriat] (1 p., ANS) — Dec. 18, 1922 with typed response from Lauriat– Dec. 19, 1922
- Lauriat, [Charles Emelius, Jr.] (1 p., ALS) — Dec. 21, 1922 with typed response from Lauriat– Dec. 22, 1922