Creator
- AWS Truepower, LLC1
- Aerial Information Systems, Inc5
- Air Flight Services2
- Akademii͡a nauk SSSR1
- Alexander, J. M.1
- Alexander, W. D.1
- Allen, Paul1
- Anderson, O.P. and Co.1
- Anderson, Robert M.2
- Andrew B. Graham Co.1
- Angel, Shlomo835
- Antonelli, Giuseppe, 1793-18611
- Anville, Jean Baptiste Bourguignon d', 1697-17821
- Appleton, D. & Co.1
- Applied Science Associates3
- Armstrong, Andrew2
- Arnold, T. J. (Thomas Jefferson), d. 18781
- Arrowsmith, Aaron, 1750-18231
- Arrowsmith, John, 1790-187310
- Arrowsmith, Samuel, -18392