Geographical magazine has a short history of the New York City subway map and its controversies. This has been a fraught and hotly contested topic for most of the last 50 years, and Jules Stewart’s article can’t go into nearly enough depth to capture it all, but it could serve as a decent entry point for those not in the know. Drawing rather heavily on the expertise of Peter Lloyd (previously), Stewart covers the subject from the first subway maps to where the MTA goes from here.

Previously: A Naïve Look at New York’s Subway Map.