White House Historical Association. This site allows visitors to explore the timeline, choose a decade between 1790 and 1990, and select from five topics -- music, presidents, First Ladies, architecture, or social life -- to learn about the White House and the Presidency.
From the site:
The White House Historical Association is a charitable nonprofit institution whose purpose is to enhance the understanding, appreciation and enjoyment of the White House. To fulfill its purpose, the White House Historical Association produces educational literature and films, develops special programs, and maintains a web site interpreting the White House and its history and the persons and events associated with it. From private funding and the sale of its educational products, the Association supports the acquisition of artwork and objects for the White House collection and contributes to the conservation of the public rooms.
In 1961, when the National Park Service suggested that such an association be formed, the idea received Mrs. John F. Kennedy’s ready approval. In July 1962, The White House: An Historic Guide was delivered to a public that had already ordered 10,000 copies. The guide is now in its 22nd edition.
The association also sponsors lectures, exhibits and other outreach programs. Thousands of schools, universities and libraries have received free educational materials about the White House. Traveling exhibits and videos are circulated to the presidential libraries and museums.