- Aircraft Owners and Pilots Association1
- Albosta, Donald Joseph, 1925-1
- Alexander, Bill, 1934-1
- Alfano Communications, Inc.1
- Alfano, Fremont and Smith1
- Ali, Muhammad, 1942-20161
- Allan B. Crow and Associates1
- Allen, Robert S.1
- Alm, Robert A.1
- Amalgamated Meat Cutters and Butcher Workmen of North America1
- American Association for the Advancement of Science. Directorate for Education and Human Resources Programs1
- American Association of University Women. Educational Foundation. Programs Office1
- American Bus Association1
- American Constitutional League1
- American Disabled for Accessible Public Transportation1
- American Federation of Government Employees1
- American Federation of Teachers1
- American Gas Association1
- American Nurses Association1
- American Physical Therapy Association1
