Posted By:
Kevin OJim:
The Library of Congress has a nice online exhibit called "Baseball and Jackie Robinson." The timeline is especially good, and has some good essays and links to primary documents (Branch Rickey excerpts, Jackie Robinson letters, photographs, lobby cards) and other sources for baseball's breaking the color line. It's a kid-friendly site as well.
http://memory.loc.gov/ammem/collections/robinson/index.html