President Barack Obama holds First Lady Michelle Obama's hand during x memorial event, Together We Thrive: Tucson and America" at the McKale Memorial Center in Tucson, Arizona, on Jan. 12, 2011.

*A book featuring the 9-year old girl slain in last weekend’s Arizona shootings jumped into the top 200 on Amazon.com right after President Obama mentioned it in his speech at Tucson.

Christina Green was among 50 children in “Faces of Hope,, Babies Born on 9/11” a paperback collection of photographs of babies born on the day of the Sept. 11, 2001, terrorist attacks.

Christina Green

The book was ranked No. 8,288 before Obama’s speech Wednesday night at the University of Arizona. This morning, it was No. 154, and out of stock.

“Faces of Hope” was released in 2002 by HCI Books, a publisher based in Deerfield Beach, Fla. A spokeswoman said a new printing would be commissioned quickly.