- 16 Agriculture
- 2 Aguascalientes, Mexico
- 2 Ah?mad Sha?h Durra?ni?, Amir of Afghanistan, approximately 1723-1772
- 3 Ahaziah, King of Israel
- 2 Aide,Charles Hamilton
- 13 Ainsworth, William Harrison, 1805-1882
- 2 Air mail service
- 1 Air Raid Zones
- 1 Aircraft
- 2 Airdrie Street
- 1 Airey, Richard, 1803-1881
- 1 Airline industry
- 1 Airplane racing
- 30 Airplanes
- 16 Airport terminals
- 28 Airports
- 2 Airstrips
- 1 Aitken, Robert, 1735-1802
- 6 Aix-en-Provence, France
- 1 Akali
- 57 Akbar
- 10 Akbar, Emperor of Hindustan, 1542-1605
- 4 Akron, Ohio
- 2 Al Mi'ra?g?
- 4 Alabama
- 2 Alabaster
- 2 Alamo, The
- 1 Alarm clocks
- 4 Alaska
- 1 Alba Dentists (Firm)
- 2 Albania
- 1 Albemarle County, Virginia
- 1 Albert, John S.
- 3 Albert, Prince Consort, consort of Victoria, Queen of Great Britain, 1819-1861
- 1 Alberta, Canada
- 1 Alberti, Sophie Modinger, Frau, 1826-1892
- 3 Albertus, Magnus, Saint, 1193?-1280
- 1 Albion Hotel, Broadstairs, England
- 1 Albion Print Works
- 1 Albrecht & Co.
