Nearly 300 ACS data users attended the 2019 ACS Data Users Conference, held May 14-15, 2019, at the American University Washington College of Law in Washington, DC. PDF versions of the conference presentations are available on the ACS Conference website. You can also view recordings of the plenary sessions on Updates on the ACS and 2020: Agility in Action and Dissemination of ACS Data: Looking Ahead.