The American Dental Association (ADA) is a professional association of dentists committed to the public’s oral health, ethics, science, and professional advancement. Formed in 1859, the ADA today has more than 155,000 dentist members. It is the largest and oldest national dental association in the world. The Association has more than 400 employees at its headquarters in Chicago and its office in Washington, D.C.
The ADA Library was started in 1927, to provide resources and reference service to ADA members. The library's primary mission is to serve the information needs of ADA members and support the needs of ADA staff. The ADA Library contains an extensive collection of nearly 30,000 books and over 600 current journals, covering all areas of dentistry and oral health, including clinical, research, practice management and historical topics.