The National Snow and Ice Data Center at the University of Colorado has published a series of before-and-after shots of America's glaciers. Their website says they're affiliated with NOAA and funded by NASA, but the connections are tenuous enough for them to have escaped the long arm of the Bush administration.
Here's McCarty Glacier in Alaska, as photographed by Ulysses Sherman Grant in 1909 (black-and-white) and by Bruce F. Molnia in 2004 (color):
