I've done a search on some USDA and/or State licensing lists and did not find the name Linda Short.
Class A (thru USDA) - are breeders that breed puppies for the wholesale market. (some other names they are know as.....*professional* breeders, USDA breeders, high-volumn breeders, commercial breeders....and the most common....puppymills). They mass produce puppies, and do not care for the quality of puppies they produce. Parents are continually bred (and most live in sub-standard conditions), live their lifes out in cages/pens that are small & many on wire). They do not receive proper solicization. Many of the puppies from these types of breeders develop health issues early and/or behavioral issues. I have never seen 1 pup from a petstore that is a quality pup or a quality pup that turns into a quality adult. From my experience, 100% of the petstore puppies have kennel cough and parasites, and at least 60-75% of them have umbilical hernias, retained testicles (one or both), luxating patellas, demodex, entropian, etc at the time of purchase. I have even seen 1 dog that developed Parvo & another 1 that developed distemper that had to have arrived at the petstore with it, or picked it up from another puppy in the petstore, because of the incubation period.
Class B (thru USDA) - are Brokers (the middle man between the breeder and petstore), or they also can be breeders themselves.
Your paperwork should give you all the information you need to do the search on the nopuppymills.com site
Information to look for that you will need for the form:
1) breeders name & address (or state)
2) brokers name & address (or state)
3) AKC (or other registery information)
4) Microchip information (alot of petstore puppies are already microchipped)
Remember, a petstore will tell you anything to make a sale. Quality, reputable breeders NEVER sell to a petstore. It is against the *code of ethics* for quality dog breeders.
Some other links for you to look at......
http://www.aphis.usda.gov/ac/publications.html#lists
http://nopuppymillscom.readyhosting.com/breedsize.htm
http://www.upei.ca/~cidd/intro.htm
http://www.dog-play.com/breedercomparison.htm
http://www.dog-play.com/breedercomparison.htm