"Standard" albinos have been around for decades, but no one has really been able to produce great numbers of them. There's also a T+ albino, several of which have been discovered fairly recently. The inability to produce Eastern morphs is a testiment to the snake's general unsuitabilty for breeding projects compared to Central American milks. There's also an overall lack of interest in North American Milks, because in most cases the babies start off on lizards.
Susquehanna Ectotherms has a white-sided Eastern Milk project that started in 1983 - which gives you a pretty good idea how difficult it is to get an Eastern Milksnake project going.
