The Smithsonian Institution Archives has a redesigned website. The home page says “the old website is archived” but I could find no information if old links will work or if old pages are still online.
The Smithsonian Institution Archives siarchives.si.edu
The Smithsonian Institution Archives captures, preserves, and makes available to the public the history of this extraordinary Institution. From its inception in 1846 to the present, the records of the history of the Institution—its people, its programs, its research, and its stories—have been gathered, organized, and disseminated so that everyone can learn about the Smithsonian. The history of the Smithsonian is a vital part of American history, of scientific exploration, and of international cultural understanding.
The Archives New Website and Blog!, by Effie Kapsalis, The Bigger Picture [blog] (September 12, 2011).
some of the features of the new site:
a new Collections Search feature that provides online access to all of the Archives’ records catalogued to date with the ability to download media for free personal and educational use, as well as to make reference requests directly from the Archives’ collection guides; dedicated pages on the history of each Smithsonian museum, research center, as well as resources on the overall history of the Smithsonian including a timeline of major events in Smithsonian history, and historic pictures of the Smithsonian; access to over 4,000 Finding Aids, which serve as guides to the Archives’ collections, that have been optimized for search to help the public more easily explore the 35,000 cubic feet of records held by the Archives; new online forums for the public to ask reference questions, and get tips on collections care and records management, from Archives staff.
Take a tour by watching the video
See also Smithsonian Institution.