TriinT, a lot of math porn coming from you lately, but I don't see a pattern emerging here. Are you just posting links as you come across them during your research, or are you trying to index the known math ebook universe? if the later, I think you should also submit them to Academic Hacker News as well.
Mostly posting links as I come across them during my research. There's no point in trying to index the known math ebook universe... it's already been done: