Website for old topographic maps?

[Waco Kid]

There was a post a year or two ago that had a link to a website where you could find old USGS or similar topographic maps. I even used it to look at how my area looked in 1960 and was surprised to discover that there was a drive-in theater just a few blocks from where my house now stands. Now I can't find the website or the post I saw. Can anyone direct me to it?

[diggummup]

I'm not sure about the post but I searched for old map links/Maybe you can find something on one of these here-
http://historical.maptech.com/
http://www.topozone.com/
http://billfriedrich.tripod.com/
http://worldwind.arc.nasa.gov/

[Waco Kid]

Thanks, Diggumup. I appreciate the links. After stumbling around for a few days, I've rediscovered the web site I was looking for - it's: http://mapserver.maptech.com/

My memory was obviously off, as it doesn't let you pick the age of the map you want to see, but the map that it brings up (at least the one of my area) appears to be from the 1960s. I never found a post on TN that mentions this site, so I must have stumbled across it some other way.