One of my long time interests is the US space program.
The famous image of Buzz's footprint (shown in Mike's article), is explained by Eric Jones and John Kaufmann:
"About an hour aftrer Neil first stepped onto the lunar surface, Buzz did a little experiement for the soil mechanics experts back home. He selected a pristine patch of soil, photographed it, made this footprint, and then took two photos of it, stepping to his left between frames. Some people assume that this is the first footprint. Neil did not have a camera at the time he made his "one small step" and that first footprint was soon obliterated during the minutes Neil spent near the ladder adapting to the new environment. "
Some of my favorite Gemini/Apollo websites for people to look at are:
http://www.hq.nasa.gov/alsj/a11/a11j.html
http://www.hq.nasa.gov/alsj/frame.html
http://www.lpi.usra.edu/lunar/surface/