Commenting on this on SMH, I noted:
A Casper Star Tribune article that sort of sheds light on some of the topics discussed here:
http://www.trib.com/articles/2009/07/19 ... 0157b9.txt
This article discusses an entire town disappearing. But it misses part of the reason for that. The town was only a few miles from another, that being the town of Midwest. Midwest is just about four or five miles from another, Edgerton. And Midwest is only about 50 miles from Casper. So the town in the article was probably only about 30 or 40 miles from Casper.
When it was founded, travel conditions would have made the town probably both necessary and viable. But by the 30s, when it disappeared, it was really redundant and inefficient, it's role having been taken over by older and slightly larger Midwest.
Today, Midwest and Edgerton are sort of shadows of their former selves as well.