I have been known to complain about the lack of postage stamps that commemorate libraries and librarians, but coins commemorating libraries are even scarcer. Recently the United States Mint issued a coin to commemorate the 200th anniversary of the birth of Louis Braille. The coin depicts a student reading in a library, and is a great collectible. Go to Mint's website to order the coin. In 2000 the mint issued two commemorative coins on the bicentennial of the Library of Congress. These coins are readily available on eBay. In 1976 the Royal Canadian Mint issued a coin on the 100th anniversary of the completion of the Library of Parliament building. Other coins commemorating library subjects that I am aware of have been privately issued. To see images of libraries on coins click here.