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This is about one of my best friends! He is an amazing local historian and a staunchly wedded empiricist, a resident of SF in the deep, old way. I highly recommend taking one of his ThinkWalks if you want to learn about local history, ecology, and the meeting of the two. http://www.thinkwalks.org/

Also check out his amazing water map of SF, which is both beautiful AND accurate: http://seepcity.org/




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