Sublime
An inspiration engine for ideas
Futurism: An Anthology (2009)
aaaaarg.failCollections
publicdomainreview.org
Public Domain Image Archive
pdimagearchive.org
Old'aVista: Home
oldavista.com
David Rumsey Historical Map Collection | The Collection
davidrumsey.comHeritage Library | Free Vintage Illustration | Heritage Type Co
heritagetype.com
Public.Work: A Smoothly Searchable Archive of 100,000+ "Copyright-Free" Images