Architectural renovation to the theater in 1993 was supervised by a New York City Partnership founded in 1963...
"Polshek Partnership is a 150-person firm known for architectural excellence and for its longstanding commitment to  cultural, educational, governmental and scientific institutions."
"This technically-advanced television broadcast studio was inserted within the volume of a 1,200-seat historic theater.
Electronic requirements dictated the studio's configuration: the number of seats was reduced to 400, and sound
absorptive areas were added."

(Additional information and photos are located at ....)

http://www.polshek.com/perf_sullivan.htm

"BCA was the conservation consultant to the architect for interior restoration of decorative plaster, stained glass,
marble wainscoting, and decorative metals. Because of the interior landmark status of the theater, BCA documented all existing conditions and architectural features before work began, including on-site identification of finishes and
paint colors."

(Additional information and a photo are located at ....)

http://www.bcausa.com/portfolio.htm

A tour of the theater given by Tony "Inky" Mendez, host of the online webshow,
is located at the website of the "Late Show with David Letterman."
Tour of Ed Sullivan Theater with Alan and Sharon

(Additional information and a photo are located at ....)

 http://best-page.us/nyc/Tony_Tour.htm