Here’s a fantastic bit of Washington Metro history that I hadn’t seen before: an original working drawing of the now-iconic map from 1974, two years before the system opened (see the opening day map here). Interestingly, it looks like Wyman was experimenting with textural treatments for the route lines at this time – stripes for the Red Line, stars for the Blue, etc. – an idea I’m ever so glad he abandoned, because it would have looked so busy and hideous.

Source: Peter Lloyd’s MetroMapArt website – link no longer active. Photo by Reka Komoli.