Separate US-based breeding efforts had begun around 1950, and a breeder known to sources simply as Mrs. Goforth received breed recognition from the Cat Fanciers' Association (CFA) near the end of 1957 for the Himalayan. Early breeders were mostly interested in adding Siamese colouration to long-haired cats, and therefore reinforced the stock by outbreeding to Persians only to retain the Persian trait dominance. However, by the 1960s, some were re-introducing Siamese stock and producing less "Persian-style" cats, In the 1980s, a concerted effort to re-establish the breed along more formally Persian lines ultimately caused the breed to be merged into Persian as a variant in some registries (e.g. in 1984 by CFA), and a decline in the "old" or Siamese-like specimens.