Source for Structure and Interpretation of Computer Programs http://mitpress.mit.edu/sicp/full-text/book/book.html
I've tried to consolidate various sources of code used in an SICP class.
assignments: Assignments from the Sample Programming Assigmnets on the SICP web site. http://mitpress.mit.edu/sicp/psets/ Some of these are old, and have dependencies on an older version of MIT Scheme. I'll try to update as necessary, but I'm not paying strong attention to these problem sets.
allcode Code from the text. http://mitpress.mit.edu/sicp/code/index.html This should be current.
projects Projects from MIT OpenCourseWare course 6.001 http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-001-structure-and-interpretation-of-computer-programs-spring-2005/projects/
exercises These are my attempts at solutions to the exercises in the book. I'm not currently attempting to be complete, and my sollutions may be completely wrong. Caveat Schemer.