Bobbin -- What I've done and do is put the contact information for the agent that gets me the most auditions and/or work. She also happens to be the agent I have the best relationship with. So, that's how I decided which agent to use. I think if you put all of your agents' information on a postcard it will make the postcard look messy and unprofessional. Also, I put my contact information first just in case the CD, production house or ad agency uses another agent other than the one I have listed. Wouldn't want to be disqualified because I'm not represented by the proper agent. Of course, if you manage to book a gig with a client of an agent that doesn't represent you, that may be the perfect way to get your foot in the door. I've seen that happen with a fellow cast member who won a gig over a talent represented by the largest
VO agency in Chicago. As a result of his booking that job, the agency picked him up as a client.
Alexis -- Not sure where you're located, but I'm in Chicago and have had auditions and bookings for gigs all over the Midwest through my Chicago agents. So you may find that your agents may actually have clients who do work in areas you would think are outside their jurisdiction.
Arlene