Like most everyone else, I seem to have accumulated a collection of pointers to interesting sources on the Web. You're welcome to cruise them. Since I don't maintain these, quite a few a dead by this time. And they said the Web would replace libraries?
Scanned photographs. A lot seems to depend on the characteristics of the display engine and the viewers I know about aren't that smart about taking these into account. Most of these images are color reduced to B&W with 8-bit depth and 120 pixel/inch resolution. If your viewer provides gamma correction, try fooling with that. On a 4-bit grey-scale display a gamma of 1.8 is about right. Here's what some keys look like, scanned directly.
You can see what I look like now, in a more recent photo taken with an Apple digital camera (what can I tell you? it must have been a bad day). Actually, you probably can't display this image, since it's in .tiff format. A loser in the standards wars.
Well, we had a kid (21 december 1993). It was a great excuse to scan in some images: