The Smithsonian Institution is the world's largest museum, education, and research complex with 21 museums and the National Zoo.
GUIdebook is an online museum of graphical interfaces, especially those old, obscure and in desperate need of preservation. Whether you want just to look back and refresh some nice memories from years ago, or are interested in seeing how the GUIs evolved throughout the decades, I hope you’ll enjoy your stay.
The Digital Public Library of America brings together the riches of America’s libraries, archives, and museums, and makes them freely available to the world.
NYPL's Digital Collections is a living database featuring prints, photographs, maps, manuscripts, video, and more unique research materials.