If you're in Boston, the Boston Public Library at Copley Square is having a free exhibition of The New Yorker cartoonist William "King of Cartoons" Steig's work. It's worth seeing.
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The Boston Public Library has a really cool exhibit about postcards related to Boston. Here's one I thought was funny from 1908 (based on the postage, I think it's 1908):
Whether or not you like maps, if you're in Boston, you should see this exhibit.
The City of Boston is now soliciting volunteers for a new Boston Medical Reserve Corps Program, designed to help the city prepare for disasters:
Last night we were invited to celebrate the launching of Nature Publishing Group's Network Boston at the Museum of Science here in Boston.