Roger Macdonald of the Internet Archive and GDELT creator Kalev Leetaru wrote this guest post for the Knight Foundation's blog describing the geographic mapping of the Internet Archive's TV News Archive and the Archive's new "virtual reading room" model to enable large-scale data mining of their collections. The post also debuts the Archive's new Visual Tapestry project that is compiling a visual archive of the complete set of images captured in the Archive's 600 million pages of digitized books.