American National Standards Institute (ANSI)
Private, non-profit organization (501(c)3) that administers and coordinates
the U.S. voluntary standardization and conformity assessment system.

Antique Telephone Collectors Association (ATCA)
ATCA, is the largest telephone collectors organization in the world.
Chartered in 1971,  as a non-profit corporation, its over 1500 active members
are located throughout the United States, Canada, Europe, and Australia.

Institute of Electrical & Electronic Engineers (IEEE)
IEEE is the world’s largest professional association dedicated to advancing technological innovation and excellence for the benefit of humanity. IEEE and its members inspire a global community through IEEE's highly cited publications, conferences, technology standards, and professional and educational activities.

Sandman.Com
Specialize in hard to find problem solving tools, test equipment, telephone repair parts
and the training needed to use these products. Training Videos are used by telephone men
and computer network installers throughout the country.

TeleComWeb.Com
The Network For Communications Professionals

Telephone Collectors International (TCI)
Historical Society for Collectors of Antique and Classic Telephone Equipment and Instruments.

The Phone Man's Homepage
Advice for home phone wiring and jacks with information about
adding second or third line and reference for wire color codes.