New USGS Map Format
"Arranged in the familiar 7.5-minute quadrangle format, US Topo maps are available free on the Web. Each map quadrangle is constructed in GeoPDF® format from key layers of geographic data -- orthoimagery, roads, geographic names, topographic contours, and hydrographic features -- found in The National Map, a nationwide collection of integrated data from local, state, federal, and other sources."
Click the link above to read the press release...