Texas in the 1920s
- Abercrombie, James Smither
- Abram, Jacques
- Acres Homes, TX
- Adair, Christia V. Daniels
- Adams, John Maurice
- Addicks, TX
- African Americans
- African Americans and Politics
- Agriculture
- Allen Ranch
- Alley, Shelly Lee
- Allred, Josephine Elizabeth Miller [Joe Betsy]
- Allright Corporation
- Almeda, TX
- American General Corporation
- American Legion
- Ames, Jessie Harriet Daniel
- Ancient Order of Pilgrims
- Anderson, Clayton and Company
- Anderson, Katherine Finnigan
- Anderson, Monroe Dunaway
- Anderson, Ralph Alexander, Sr.
- Andrews, Frank
- Andrews, Jesse
- Anson Jones Press
- Antoine, George Washington
- Arbuckle, Maclyn
- Asamblea Mexicana
- Astol, Leonardo García [Lalo]
- Austin, Gene
- Aves, Charles Marion
- Axson, Stockton
- Bailey, Joseph Weldon
- Bailey, Joseph Weldon, Jr.
- Baker Botts
- Baker, Alice Graham
- Baker, Burke
- Baker, Robert Holmes
- Barker, TX
- Barron, Wingate Stuart, Sr.
- Barrow, Leonidas Theodore
- Baugh, William Lofton
- Bayland Orphans' Home For Boys
- Baylor College of Medicine
- Bayou Bend
- Bellaire, TX
- Bellows, Warren Sylvanus
- Berachah Home
- Bertner, Ernst William
- Big Lake Oilfield