AKC papers while they should verify a dogs pureness towards it's lineage, that's unfortunantely not always the case. Those documents can be fudged.
Just be careful who you shop from. 
I would highly recommend either you get breeder suggestions from someone here on YT OR go to the AKC's website and get breeder referrals there. A good rule of thumb for me is to no purchase from a breeder that breeds BOTH Silky's and Yorkies within the same kennel UNLESS they show those dogs actively. Because accidental matings can/have happened and those that are more unethical have little issue w/ registering the litter to have parents of the same breed to cover it up. Why even play around w/ that when you know clearly what you're shopping for? 
Never knew shopping for a puppy would be so difficult? 

  Best of luck to you and yours and when you do find what you're looking for, please be sure to come back and let us know.....pics are always great too! 
