Over at Rex Weyler's website there's a handy chronology covering the early history of Greenpeace. You can check it out here. A companion piece to his authoritative Greenpeace: How a Group of Ecologists, Journalists, and Visionaries Changed the World, it is a wonderful tool for clarifying who was involved, as well as the relationship between Greenpeace and pre-existing groups such as the Sierra Club of British Columbia and SPEC.
In the past I've received emails asking whether there are any timelines available that cover the environmental movement in Canada. I haven't seen any, but there are many online that document the movement in the United States. (One that I think is particularly well done is this one, put together by the folks at the PBS television program American Experience.) I'd like to put together a timeline documenting the environmental movement in Canada, making specific reference to important events, individuals, and organizations. The only problem is that my own research is focused on what's happening in Ontario, particularly Toronto. As such, at present I don't think I could do justice to the project. However, if there are some folks across the country that would be interested in sharing their expertise I think this would be a wonderful collaborative project. Send me an email if you think you'd like to participate in such an endeavour.