Letterform Archive runs a free online archive out of a San Francisco museum - over 3,500 scanned items covering the history of lettering, typography, and print, sorted by person, firm, decade, country, and format.
This is not a font source. It is primary research material: original artwork, specimens, and ephemera at high resolution.
Useful if you are researching typographic history, not if you are looking to download a font for a project.
No account needed to browse. When checked, the oa.letterformarchive.org subdomain was down for scheduled maintenance, so treat it as occasionally unavailable.
Lettering and graphic design digitized collection.
