- 3 Allies
- 2 Alligators
- 1 Allison Street
- 1 Allison, Joseph, 1819-1896
- 1 Allison's Clothing
- 5 Alma Street
- 4 Almanacs
- 1 Almeda Mills
- 17 Almond Street
- 1 Almond's Cotton Factory
- 66 Almshouses (buildings)
- 1 Alpaca (fiber)
- 17 Alphabet books
- 124 Alphabets
- 1 Alphington, England
- 1 Alphonso Faber (Firm)
- 1 Alpine (Alps)
- 3 Alps
- 1 Alta Friendly Society
- 2 Altarpieces
- 26 Altars
- 1 Alter Street
- 1 Alter, George E., 1868-1940
- 2 Alterations (object components)
- 2 Althoff, Bergmann & Co.
- 1 Alton, Illinois
- 5 Alum
- 1 Amalekites
- 1 Aman Steam Planing Mill
- 53 Amateur theater
- 1 Amateurs
- 1 Amazon Vase
- 2 Amber
- 1 Amber Carpet Mill
- 2 Amber Dye Works (Thomas Dawson & Co.)
- 1 Amber Hall
- 2 Amber Street
- 2 Ambler, Pennsylvania
- 10 Ambleside, England
- 5 Ambrose, Saint, Bishop of Milan, d. 397
