With the talk of Herald Square and the vibrancy of the 7th ave corridor going on recently, I thought I would share this map I found. It's a very detailed map of the 1st street/7th/8th ave area from 1911 (an insurance map) that shows all of the buildings and their uses (and construction in some cases)
Click here for a really hi-res version. Everything readable:
http://data2.archives.ca/e/e338/e008445298-v8.jpg