- Alexander the Great
- Alexander Woollcott
- Alexandre Dumas
- Alexandria
- Alexandrian Mathematicians
- Alfieri
- Alfonso I
- Alfred d Orsay
- Alfred in the Neat-Herds hut
- Alfred Tennyson
- Algonkin Village of Pomeiock, on Albemarle Sound, in 1585
- Alice Cunningham Fletcher
- Alice Freeman Palmer
- Alice Pitezel
- All a blowin
- All it lacks is your endorsement
- All on the same footing
- All sorts of pups
- All suits frame
- All women look alike
- All, the Pilot
- Allegorical Window
- Allen's Lung Balsam
- Alligator
- Allonge
- Allure the Beasts
- Aloe Pienaarii
- Aloe pretoriensis
- Aloe Globuligemma
- Alpha and Omega Divider
- Alpha Omega Divider
- Alpine hare or Snow Hare
- Also Brave
- Also Brave
- Altar of Castor
- Altar of Gold, presented to the ancient Cathedral of Basle by the Emperor Henry II
- Altar of Jupiter Ceraunus
- Altazimuth Theodolite
- Alternate Title page
- Alton B. Parker
- Am I not a man, and a brother
- Ambulant Merchants ( Rue Montmartre )
- Amen-Ra, the King of the Gods
- American Colonies, 1760
- American Coot
- American Goldfinch
- American Indian Picture-Writing
- American Luna Moth
- American Mastadon
- American Merganser
- American Merganser, Male
- American Pintail
- American Queen
- American Radiator Company Poster
- American Woodcock
- Amerigo Vespucci
- Among those not invited
- Amphitheater
- Amphoræ, Rhytons, etc.
- Amputation below the knee