A professor of psychology at Vassar College is the author of this impressive online statistics textbook. Seventeen chapters and numerous appendixes range in topic from beginning concepts to what would likely be covered in a second or intermediate course in statistics. Easy to navigate, the online interface provides quick access to all sections of the book, and some of the book's material is...

The Department of Mathematics of the University of Washington offers the Probability Abstract Service. This archive of research article abstracts covers a variety of topics in mathematics. Everybody is welcome to submit abstracts, so the diversity of submissions is great. The abstracts include either links to a full report or email addresses to contact authors for a copy.