The archives we will try to add here come from three sources. The Aerospace Legacy Foundation, The Columbia Memorial Space center, and some private collectors.
The NASA maintains an extensive archive of program documentation and images.
The foundation has started a collection of documents and images and graphics that are currently uncatalouged and in storage.
An official archive is being established for public access.
This is a great resource for those past documents of the Space Shuttle and Apollo Programs that were to big or voluminous to lug around checkout their files.
Here is the Columbia Accident Report Official.
Here is the Apollo One Investigation.
Future plans are for an electronic cybrary of information and data.