Sent out a request with a 5x7 on 4/10 and received it back personalized on 4/19.
I used the address in the data base: 5842 W. Sunset Blvd, Los Angeles, CA 90028-6607
I sent an email to http://www.pennandteller.com/wordpress/contact/ on 4/11 asking for an autograph they sent an 8x10 on 4/16.
The address on the returned envelope was Steven Doctors, 3555 West Reno Ave, Suite L, Las Vegas, NV 89118.