American Watchmakers-Clockmakers Institute (AWCI)
The premier organization dedicated to the timekeeping or horology industry

The World’s Premier Custom Tower Clock Manufacturer

Canterbury International
Canterbury has been fabricating durable, ornamental post clocks & tower clocks for nearly 50 years. Our clocks often form the signature element of a new streetscape project or commercial development.

Clocks Magazine
Established in 1977, Clocks is the world's leading independent horological magazine.

Electric Time Company - Tower and Street Clocks 
(Restored the Bicknell Clock in Lawrence Massachusetts with SAC)

Horology - The Index (The Science of Timekeeping, Clocks and Watches)

Marking Modern Times -ISBN-13 978-0-226-01486-9
A Marvelous book documenting the history of clocks, watches, and other timekeepers in American life.

NAWCC - National Association of Watch & Clock Collectors, Inc.
A forum built around sharing information about clocks and clock history. An excellent place to ask a specific question.

The Verdin Company - Bells, Carillons, Chimes, & Clocks
An excellent resource for new clock installations, clock restoration, and tower bells alike.

Neill Carillon Service
Neill Carillon Service services tower clocks, cast bells, carillons, and audio video systems.

The Tower Clock Company
Repairing, preserving and restoring tower clocks for over 30 years.

Time Center
The Ultimate Collection of Clock Resources

Historic Arts & Casting, inc.
(Restored the Yorkville clock in Manhattan, New York)

Clocks of New York written by Chris Desantis a board member of Save America's Clocks - (ISBN 978-0-7864-6087-8)