GM Heritage-Cadillac Archives Phone Number??

[Doug Lansing 21659]

I recently paid my dollars and received info from the GM Heritage Center, Cadillac Archives, about the construction of my 1949 6269x sedan, but some questions about the build remain unanswered.  I tried to find a phone number to call them, but theres no listing!  Perhaps they dont want to be pesterd with questions like mine.  If anyone knows a number to talk to a living person or an E-mail address Id really appreciate it.