Graves of Elizabeth (left) and Mary Ann Hall in the Congressional Cemetery, Washington, DC. Mary ran a successful brothel 1840 to 1878 four blocks from the Capital. The National Museum of the American Indian was built on the site in 1999.
Dr. John W. Mauchly, inventor of some of the original room-size electronic computers, poses in Washington, DC, on November 2, 1962 with one the size of a suitcase after addressing a meeting of the American Institute of Industrial Engineers. He now is working on a pocket variety which, he says, may eliminate the housewife's weekly shopping list and the chore of filling it by hand. He predicted everyone will be walking around with his own personalized computer within a decade.
"President Obama’s nationwide push for innovation in manufacturing reaches across agencies from the National Science Foundation to the Department of Energy, and now it’s reaching all the way into the Pentagon where 60 million dollars is being set aside for investment in 3-D printing technologies."