This compelling digital exhibit pays homage to the life and work of Louis Braille, the inventor of the tactile six-dot reading and writing system which changed the way that blind people were able to understand and contribute to the world. The exhibit was created by the Library of Congress, and it complements an in situ exhibit at the Library's James Madison Building. Clicking on the "Exhibition Items" will bring up two dozen items from the exhibit. There's quite a trove here, including a historic image of the Library of Congress's Reading Room for the Blind from 1902 and a tactile map of the District's Metrorail system. Many of the documents also have extra interactive features that allow users to zoom in and out around each dot, image, or corner.