"Superior" is the very first lost state I ever came across... I read about the proposal in a Newsweek article in the 1970s--when I was a teenager. It seemed like such a weird, cool, fascinating idea. In today's Milwaukee Journal-Sentinel, book reviewer Jim Higgins echoes that fascination in his very nice review of Lost States. While the online version of the review has no maps, the print version of the newspaper had a big map of Superior. Cool. So if you missed it, the map is above.... and a bigger version here.