Sales for a photo book featuring a young girl killed in the Tucson shootings last weekend have jumped dramatically following a mention in a speech Wednesday by President Obama, AP reports. Faces of Hope features photographs of 50 babies born on Sept. 11, 2001, one of whom was nine-year-old victim Christina Green. After Obama’s speech at the University of Arizona last night, the book jumped 8,134 spots on’s bestseller list and by this morning was in the top 200. Faces of Hope, published by HCI Books,is currently out of stock, but the publisher says a new printing is imminent.