Contact Information for Harlan Sprague Dawley.

Address: 8520 Allison Pointe Blvd., Ste. 400
Indianapolis, IN 46250
Phone: 317-806-6060
Website:http://www.harlan.com/

You may have to do some indepth searching on their site to find a good strain of mice for maximum production. They have hundreds of strains, so the best bet would be to call them and talk to someone. They will help you with what you need. They have 2 strains of Swiss Webster, and possibly a third. Tell them what you are looking for and they will be happy to help. Shipping may run you a babies arm and leg, but in the long run it will save you tons. Good luck and let us know how you come out.