Textbooks and syllabi from the School Mathematics Study Group (SMSG) (formed to advanced math education after Sputnik http://en.wikipedia.org/wiki/School_Mathematics_Study_Group ) are at http://static.cemseprojects.org/smsg/ . They are 60s-era typed manuscripts. The SMSG also commissioned the New Mathematical Library http://www.welltrainedmind.com/forums/showthread.php?t=232188 , containing books (still available used on Amazon) on mathematical topics not emphasized in the usual algebra-to-calculus sequence.

"To see what is in front of one's nose needs a constant struggle." - George Orwell