- Alexander Floyd Wall Correspondence, 1861/18651
- Alexander H. Davidson Letter, 18611
- Alexander Hamilton Stephens Envelope, 18621
- Alexander Welch Reynolds Letter, 18611
- Alexandria and Fairfax Counties [Virginia] Civil War Correspondence, 1861/18621
- Alfred Henry Dashiell Perkins Memoir1
- Alfred Hughes Family Papers, 18621
- Alfred L. Mantor Diary,, 18641
- Alfred S. Roe Report, 18651
- Alfred Thompson Correspondence, 1862/18631
- Allen J. Clifton Correspondence, 18631
- Allen Shortledge Letter, 18621
- Allison Family Correspondence,, 1862/18641
- Alonzo D. Cushing Letters, 1861/18641
- Alva Cleveland Diary, 18621