I would like to say thank you again to everyone who has helped - right now I have narrowed my list down to 79 verified single-gene mutations. This is certainly enough to do my statistical analyses.

However, my professor noted that one thing we should try to include in our publication is the origins of the different morphs. While I know that the vast majority were introduced via imported individuals displaying an aberrant phenotype, I would like to be able to note any exceptions, such as mutants that appeared in a clutch hatched from an imported wildtype female, or de-novo mutations that appeared in captive-bred lines. It would also be important to include some statistics on ball python importation (ie how many animals have entered the US pet trade through importation annually), so if anyone knows where I might find that information, that would be fantastic. The only "source" I was able to find was from the HSUS, and given that they have an investment in portraying the exotic pet trade as harmful, their numbers would not be a reliable source.