About 10 years ago, when I was searching through the collection at the City Plans Unit of the Streets Department, I found a couple of maps that exemplified the title of this post. Both of them were copies – one a blueprint probably made around 1900, the other a photocopy from the 1960s. Since both were printed on flimsy paper, someone in the office beefed them up by scotch-taping them to posters, printed on heavy cardboard, that must have been lying around the office. The front sides and flip sides of each are shown below, and I’ll let you judge for yourselves which is more interesting, but I think you already know which side I come down on. My vote is for the backsides.