A growing collection of historical works on the subject of mathematics. When I last visited this site there were 456 General monographs, 576 Math books (512 titles, 576 volumes and 691 New York State Historical pamphlets and monographs.
Free Online Collections of Math Textbooks Textbooks
While I hate to admit it, there are other folks who are also maintaining lists of top-quality online math textbooks that can be accessed and downloaded freely. Hopefully, one day, my list will supersede their list, but, in the meantime, if you can’t find what you are looking for on Online Degree Discussion they’re worth a try. If nothing else, they may save you a great deal of time slogging through the search engine results trying to cull truly free resources from ones that just claim to be.
These collections are maintained by educators, rival sites, professional organizations and universities.
I would love to exchange links with other free textbook sites, so if you are running a free online math textbook list of your own, please contact me and I’ll add you here. If you are a student who knows of any great resources that I may have missed, please let me know and that way they can be shared with everyone.
List of Free Online Collections of Math Textbooks Textbooks
Cornell University Library Historical Mathematics Monographs
Free Online Textbooks, Lecture Notes, Tutorials, and Videos on Mathematics
An excellent list of college level mathematics textbooks and other opensource materials organized by topic and provided by someone at NYU. Whoever jmg336 is, we thank you for compiling this list of great online resources!
FreeTechBooks.com
While their focus is on computer science, this large site also shares over 100 open source mathematics textbooks.
More Free Math Textbooks and Course Materials Online
77 great textbooks, abstracts and online courses for college math students. The author apologizes for the random content but hopefully through continued use will not discontinue his list. Special thank you to George Cain at the Georgia Institute of Technology, School of Mathematics for providing this resource.
Open Content Mathematics Curriculum
Ben Crowell, at the University of Puget Sound, is compiling a list of truly open source math textbooks, software programs and other materials that could easily be used to comprise an entire course of study for an undergraduate mathematics curriculum.
Samizdat Press
The Colorado School of Mines offers several science and math textbooks. There are a number of unique offerings here relating to seismology, geophysics and ray and wave theory.