Crippled children study map on ceiling while they lie on table taking treatments…
Innovations in linoleum maps, ca 1942:
Located in the Shrine Hospital in San Francisco.
Map made from 451 individual pieces, and measures 32 feet by 12 feet.
Popular Mechanics, August 1942
Making Maps: DIY Cartography 
Very interesting. Thanks for this. I wonder if the map is still there?
The building is still there, now a historical landmark and retirement living facility:
http://www.noehill.com/sf/landmarks/sf221.asp
I had polio as a kid. My parents put up wallpaper in my bedroom that was a world map (ca. 1948) and it filled one wall. It provided hours of entertainment and adventure while I recuperated. Thanks for the post.