Froyd, they are negative scans. I'm actually in the process of placing a print order that includes them, so it will be interesting to see how they translate (I don't wet print, which would be the preferred option, but we must work within our limitations).
Frank, Bryant Park is just a constant, and constantly changing, set of photo opportunities. I tend to make a single pass through either on my way to or from Grand Central, and I usually end up with something I like. Save a few more frames for it the next time you're in town.