Links

Reference:
The National Film Registry Official Site
The National Film Preservation Board
The National Film Registry on Wikipedia
America’s Film Legacy (author Daniel Eagan’s website)

Articles:
Dave Kehr on the first year of the National Film Registry (paywalled)
Choosing the National Film Registry (2015 article by Daniel Eagan)
Inside the National Film Preservation Board (2015 blog post by Jan-Christopher Horak)
What Happens to Films Selected for Preservation by the Library of Congress? (2018 article by Nick Keppler)

National Film Registry titles online:
The National Film Registry YouTube Channel
Over 70 titles on the Library of Congress website
National Film Preservation Foundation (15 titles)
National Film Registry titles available at Dailymotion
National Film Registry titles available at the Internet Archive
Benjamin Wilson’s The Near Complete National Film Registry YouTube Channel

National Film Registry blogs/podcasts:
Irresistible Cinema
The Horse’s Head
The NFR Completist
Gargus
You’re Missing Out: A National Film Registry Podcast

Miscellaneous:
The National Film Registry on filmsite
The National Film Registry on Classic Movie Hub
Nominate your choices to the National Film Registry
The Archival Impermanence Project (Ross Lipman’s book about film restoration, which includes essays on several of the National Film Registry titles Mr. Lipman has restored)

Home video release date sites:
The Digital Bits
Blu-ray.com
DVD Beaver

Online DVD/Blu-ray Disc rental outlet:
Facets

These Amazing Shadows (2011 documentary about the National Film Registry):
PBS Site
Purchase the PBS DVD from Amazon
Purchase the PBS Blu-ray Disc from Amazon