Amy Martin has teamed up with 826LA and the Echo Park Time Travel Mart to produce a second collection of time-travel themed posters. They are all 18″ x 24″, and they cost $19.99 each (or $69.99 for all four). The proceeds will go to benefit 826LA, a nonprofit dedicated to helping students 6 to 18 with their creative and expository writing skills, and to helping teachers inspire their students to write. The last series of posters raised over $30,000 for the cause. Visit 826LA.org.