| American Ballet Theatre. Matches 2 items |
| American Bar Association. Committee on Biotechnology. Matches 1 item |
| American Bar Foundation. Matches 1 item |
| American Bible Society. Matches 2 items |
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American Book Works Corporation. SEE: American BookWorks Corporation Matches 1 item
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American Booksworks (Firm) SEE: American BookWorks Corporation Matches 1 item
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| American BookWorks Corporation. Matches 1 item |
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American Buildings Survey. SEE: Historic American Buildings Survey Matches 2 items
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| American Catholic Committee. Matches 1 item |
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American Center of International PEN. SEE: PEN America Matches 3 items
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