I was at Disney World again last week, and hidden in one of the old stores on Main St. Kodak has an exhibit of photography, featuring a lot of postcards and travel emphemera.
First we have a Kodak folding brownie camera. Note the NY City Central Park Postcard (not a real photo, so I'm not sure why they have that behind the camera).
Next we have another Brownie camera, and a few miscelaneous postcards.
Postcards as part of a 1933 Chicago World's Fair Display:
And finally we have a nice 1940's/50's roadside display: