Teach a Child to Read With Children's Books can be downloaded in its entirety
here (your pick of editions, too).
MEP math - Pre-K through high school. British program based on Hungarian approaches to teaching math - very conceptual, full of thinking, puzzle-type problems.
CSMP - K-6. Very unique conceptual math program, comes out of the original New Math of the 60s. Has math storybooks, very hands-on in younger years - feels like a bunch of mathematicians got together and tried to make arithmetic fun
.
KISS Grammar - free grammar program that has a big picture approach, and uses passages from literature for analysis.