Association of Directory Publishers
The group formed in 1898 as the Association of American Directory Publishers, headquartered in New York. It aimed "to improve the directory business." It changed its name to the Association of North American Directory Publishers in 1919. It has held annual meetings starting in 1899 and has published the Directory Bulletin. Officers have included George W. Overton and Ralph Lane Polk. Among the members in the 1920s:
In 1992 the group renamed itself the "Association of Directory Publishers."
- Encyclopedia of Associations 1 (51st ed.). 2012. p. 318. ISSN 0071-0202 – via Boston Public Library Reference & Reader's Advisory Department.
- "(Advertisement for the Association of American Directory Publishers)", Boyd's Directory of Harrisburg, 1908
- Printers' Ink, NY, September 11, 1919
- "Association of North American Directory Publishers". WorldCat. OCLC. Retrieved April 5, 2013.
- Directory Bulletin 1, Milwaukee: Association of American Directory Publishers, 1901
- "Members of Association of North American Directory Publishers", Manchester Directory, Sampson & Murdock Co., 1921
- A.V. Williams (1913), The development and growth of city directories, Cincinnati, Ohio: Williams Directory Co.
- "Pacific Bell fends off feisty competitors seeking confidential Yellow Pages data", San Francisco Business Times, March 1, 1991