Great old map of Boston’s extensive commuter rail network. I really like the way the subway lines are included to give scale to the whole network, and I especially like the square that the main interchange stations on the subway lines make — an understated design choice that gives a nice central focal point to the map.

I suspect that the odd colours of the Orange and Red Lines are due to aging ink discolouration rather than being that colour originally.

Source: ck4049/Flickr