I confess - I am a map geek. The United States Geological Survey has digitized and placed online all of its Topological Maps.
Here are the links to their Map Locator & Downloader and their Historical Topographic Maps
Download speeds are a wee bit slow (wonder why) but should be better once the novelty is over - couple of weeks...
Here are two views of my little hamlet - first from 1972 and second from 1919 - this is a lot of fun as a lot of the mines are shown on the older maps. Also to note is that Maple Falls was a lot larger in the 1919 map - home to about 2,000 people whereas today, it is about 90+ houses and 350+ people. Also of note is the hatched line - this was the railroad that served Glacier as well as the sawmill just south of where I live.
