The first APHA Annual Meeting and Expo took place in Cincinnati, Ohio in 1873. See a full historical list (PDF) of Annual Meetings.
Programs, abstracts and virtual expos from meetings in the years 2000-2019 are available online. For abstracts from Annual Meetings prior to 2000, contact firstname.lastname@example.org.
RAMP: Recorded Annual Meeting Presentations from the 2005-2017 Annual Meetings are available for free. Select the Program and Abstract link. A folder icon next to the session name indicates that recordings are available.