Clay,
The one I had good luck with is:
Dr. Sylvia Moehle Fax +49-551-7709978
Schillerstr. 72
37083 Goettingen
Germany
E-mail: Sylvia.Moehle@t-online.de
A friend of mine was well pleased with this person
Haupt'S finden&suchen
Christoph Haupt
Sehnder Strasse 28
D-30559 Hannover
TEL: +511 522313
FAX: +511 8793208
eMail: chg.C.Haupt@t-online.de
I would suggest that you send an email to each of them, explaining what you
are looking for and see if either can help you. If they can, they will tell
you what they charge. Fortunately they both have e-mail and speak and write
English.
Good luck,
Bill