Win a bookmobile visit from the San Francisco Public Library (USA)

To properly celebrate National Bookmobile Day next week, the San Francisco Public Library has put together an online contest that ends with a big prize. National Bookmobile Day is next Wednesday and the SFPL has launched an online scavenger hunt starting Friday, which continues through April 16, according to library spokeswoman Michelle Jeffers. The contest will feature the library's "Green Bookmobile" - the latest addition to the fleet of four other roving libraries. Throughout the contest the library will post a photograph on its homepage with visual clues of the vehicle's location at one of six iconic San Francisco landmarks. Guesses as to where the mobile library is hanging out in the city can be submitted once per day. For every correct answer, patrons will be entered into a drawing to win a two-hour visit from the bookmobile at the location of their choice