I've posted numerous book links in past threads, that say the maltese was thought to be one of the dogs used in the make up of the YT and I continue to find new books pre 1950 that state the same.
The New Book of Dog, Robert Leighton, 1907, under the chapter of Yorkshire terriers, it talks of the Yorkshire Terrier heritage ...
"Evidence of origin is often to be found more distinclty in puppies than in mature dog, and it is to be noted that the puppies of both the dandie and yorkshire are born with decided black and tan coloring. Selection and rejection must have been important factors in the production-selection of offspring which came nearest to the preconceived model, rejection of all that had the long body and short legs of the skye,
the white colouring of the maltese, the drooping ears of the dandie and the wiry coat of the black and tan"
The New Book of the Dog - Google Books
I recently purchased a 1945 copy of the AKC's "The Complete Book of Dog". It’s a 700+ page book displaying all the reg. AKC breeds. Each breed chapter has numerous photos, brief history and breed standards. Each chapter was written with the help and approval of the specific breed club.
Under the Yorkshire Terrier chapter, it states that in addition to the dogs currently thought to be used in the breed makeup, also dogs like the Dandie Dinmont and Maltese were thought to be used in the makeup. I’m at work now so can’t quote word for word but that was the basic idea.
So how and where did we go from the early writings of the late 1800's through early/mid 1900's where it's stated that the maltese was part of the Yorkshire terriers heritage, to the current thinking of today's YTCA that there was never any white dog or dog with white used in the make up of the YT?