As part of its fundraising efforts, the San Francisco Center for the Book has a group of local artists create unique large linocut prints that are inked and pressed by a two ton steamroller and then sold at an annual auction. On the day the linocuts are printed, there’s also a street fair with a book arts and printers’ sale as well as a chance to pull a print on the center’s letterpress printers. This year the big print day is Sat Sep 8 from 11-5 (at 16th & De Haro). You can find out more here. (The photo is of SFCB studio manager Katherine Case on the steamroller.)