Internet Broadway Database  |  www.ibdb.com
A great resource for finding a veritable plethora of information about broadway plays, musicals, and other productions... from authors to producers, actors, lighting directors, theaters, and more!

Samuel French, Inc. | www.samuelfrench.com
Play publishers and author's representatives. New York, New York; Hollywood, California; London, United Kingdom; and Toronto, Canada.

Tams-Whitmark Music Library, Inc. | www.tamswhitmark.com
For producers of musical shows. New York, New York.