Rick6531,
Have you considered asking any of the ladies you have been with (through the agencies) if they would be willing to provide you with a reference? Ideally, that would allow a direct contact.

Alternative Suggestion: (which might not work with everyone). I have a photo of myself and a very well known PS. The photo was clearly taken in a home (or a large, expensive-looking apartment). We're laying on a bare rug in front of her fireplace. We're also "bare". (yes, I also provide the ladies e-mail and cel #, but she doesn't answer her own e-mail).

I supplied this photo to two providers...who asked no further questions and accepted the appointment. (One of them wanted top meet my friend)
Good Luck,

I would look for independent sp's that didn't ask for references. And arrange a session with them and ask after words if you could use them as a reference. Go to erosguide.com, there are plenty of sp's in the Philly area. Some don't ask for references and they list a phone number and email address to contact them by. Once you've had a couple of sessions with a couple of providers, then you'll have your refers. But ask these ladies first before you call on other sp's. This should work. This is something I had to do. good luck.