ALPO adopted a similar structure with sections like that of the British Astronomical Association (BAA) in order to properly study the objects observed.
Association football | association football | Forward (association football) | Goalkeeper (association football) | Defender (association football) | National Basketball Association | American Association for the Advancement of Science | Association of Tennis Professionals | American Library Association | World Boxing Association | National Collegiate Athletic Association | American Association | American Heart Association | National Association of Intercollegiate Athletics | National Rifle Association | International Development Association | National Association for the Advancement of Colored People | American Bar Association | Philippine Basketball Association | American Medical Association | International Air Transport Association | World Hockey Association | Women's Tennis Association | Gaelic Athletic Association | Substitute (association football) | Progressive Conservative Association of Alberta | American Association (19th century) | defender (association football) | American Association (20th century) | American Automobile Association |
Walter H. Haas (born 1917), founder of Association of Lunar and Planetary Observers