PREOSSIA Is an independent Old-Style Siamese breed club founded in 1999 with the purpose of ensuring the survival of the breed which, by the 1990’s, as explained on their website, “was facing either extinction by numbers or extinction by adulteration. (The latter is what we call the mixing of non-Siamese cats with true Old-Style Siamese, coupled with selective breeding for a look that is not correct or authentic.)” see

The PREOSSIA website will provide you with a comprehensive explanation of the Old-Style Siamese breed history with pictures of cats imported from Thailand in the very early 1900’s