As I've talked to people about "Blood Alley," both on my book tour and in casual settings, I've found a considerable amount of interest in New York City history, and in finding links to the ever-vanishing past. Despite the efforts of preservationists, the force of change in New York is relentless.
For anyone interested in getting a good, long glimpse of long-gone parts of New York, please check out the Forgotten New York web site, which can be linked at http://www.forgotten-ny.com/.
One of the best things about this site is its refusal to indulge the obvious. There's a lot of stuff from the boroughs outside Manhattan, and from neighborhoods that never make the tourist guides.
I'm tempted to say that I've wasted plenty of time at this site, but that would be inaccurate, since I always find stuff that's offbeat and interesting. But I will say this: it's an easy site to be distracted by, and then to get lost in.