Names
- Alden, Timothy, 1771-1839.1
- Alexander, Archibald, 1772-1851.1
- Alexander, James, 1691-1756.1
- Allen, Edward A. H. (Edward Augustus Holyoke), 1828-1898.1
- Allen, William H. (William Henry), 1808-1882.1
- American Anti-Slavery Society.1
- American Association of the Red Cross.1
- American Asylum, at Hartford, for the Education and Instruction of the Deaf and Dumb.1
- American Board of Commissioners for Foreign Missions.1
- American Colonization Society.1
- American Society for the Diffusion of Useful Knowledge.1
- American Women's Hospitals.1
- Amistad (Schooner)1
- Anderson, Jo. (1 letter)1
- Anderson, Thomas. (2 letters)1
- Andrews, John, 1764-1845.1
- Angel, William Gardner, 1790-1858.1
- Anonymous (1) "Revd. Sir" (someone connected with the Royal Society) (1 letter)1
- Anonymous (1)–to Walter Minto c/o Mr. Chrystie, New York. (1 letter)1
- Anonymous (2) (1 letter)1