http://www.ellenskitchen.com/faqs/calcium.html I really like this site and will explore it later for more information on cooking and gardening.
http://www.bawarchi.com/health/calcium.html This is an Indian site and lists Indian food sources for Calcium. It also states a lower amount of RDA for Indians, which I find very interesting. I'll have to ask Shahram what some of this stuff is.
http://www.nichd.nih.gov/milk/whycal/vegetables.cfm You can see the NIH push for dairy here. They list a quite small and odd assortment of calcium-rich foods. Clearly, they have a dairy bias.
http://www.project-aware.org/Health/Osteo/osteo-bonehealth2.shtml This is a very cool all-around site. It gives a list of herbs that also help with prevention of osteoporosis.
http://www.soystache.com/calcium.htm This is an excellent list of not just calcium-rich foods...it gives cholesterol, protein, magnesium and a few other detals. It's a vegan site, so it's going to be thorough. :o) Scroll to the bottom for the list.
http://www.healthatoz.com/healthatoz/Atoz/dc/caz/bone/poro/osmilk.jsp This site has a better breakdown of ages and calcium needs. It also has a good list of different beans and their values, but not as detailed as the Soy Stache list.
http://www.naturodoc.com/library/nutrition/calcium.htm I like this site because it talks about different things than the others. There's also a calcium inhibitors section, the only one I found in all my surfing.