Broadway set/backdrop designs

[Fred Muller Newton <fmuller@PLANET.NET>]

Help!
    I would like to know if there is any place which has the actual set
and backdrop designs for broadway plays.  We are specifically looking for
HELLO DOLLY.  I understand that there may be a library in NY called
something like the NY Library for Performing Arts.  Can anyone help me?
Thank you for your time.
             Fred Muller
Please mail to me directly at fmuller@planet.net