Mary Roach, author of Packing For Mars (our book of the week for August 16th), will be at Book Passage in San Francisco tomorrow to speak about and sign her book. You can order a signed copy for $25.95 + s/h by clicking on the link above. (You may want to clarify in the comment field that you are requesting a signed copy, since I didn't notice any differentiation between signed v. unsigned).Labels: autographed books, collectible, Mary Roach, Packing for Mars