According to the letter you provided the parents were spayed & neutered and Trippy was "placed with friends" -- sort of sounds like petting out to me. I don't know about you but I still register my pets, even if I plan to spsy & neuter.
I saw in another post you made, you alluded to this Wildweir line contributing to the partis here and perhaps being from the same Streamglen line as the Biewers and Nikkos Orange Blosson (Parti). Wouldn't that be unlikely since Joan said in all the years she and her sister bred yorkies they only ever came across this ONE tri-color and it wsa on a first breeding where dam & sire were subsequently neutered? What about Trippy? Was he neutered too? Seems she would have done that since she was so conscientious about spaying & neutering the parents.
As far as some article about Hemingway having a white yorkie -- Really???
reference? Stretching pretty far. Maybe it was a rare albino yorkie? Maybe it was a Maltese and the writer was not familiar with the breed. Maybe and more than likely it was a mix! (Lots of people will call a mix by what they see as the predominant breed.) Maybe it was a persian cat???
Who knows? Really crazy to think you could toss that one out as a reference. I know I said I was dog tired, but come on.
(S'okay, I have been known to stretch a point to
try to fit too. I won't fault you for trying).
I don't think we will ever see eye to eye on this. I do have a few references from folks with more experience and clout in the breeding world than any of us..... maybe those would be of interest. I think I will make a new thread though. This one is getting sort of convoluted.