Himalayan or Persian?
CFA recognizes Himalayans as a division of the Persian. In other words it is a color pattern of the Persian. It is confusing as some registries have them as separate breeds. CFA also had them divided years ago. Himalayans are to have the same features as any other color of Persian except coat and eye color. If you would like to read about the Persian breed you can find this article on CFA's website:
An article on the Himalayan Division can be found here:
An excellent article written about the Himalayan and their history by Linda Berg can be found here:
If you are at all interested in showing a Persian you should study the Breed Standard. This is a compilation of what it takes to be "The Ideal Persian".