Front cover for a 1977 map of BART and connecting bus services with some great late-1970s typography: tightly spaced Helvetica, yum! That BART icon is also pretty amazing and is just asking to be digitally recreated. However, there’s something screwy about that map, as much of BART appears to be located in or underneath the San Francisco Bay. Global warming, perhaps?

Hardly: some quick Photoshop analysis reveals that  the underlying map has simply been erroneously rotated 180 degrees and flipped horizontally: that’s the San Mateo Bridge at the “top” of the Bay. Whoops!

Source: Luke O’Rourke/Flickr