As far as obtaining a Rand-McNally atlas -- consider stopping at any Wal-Mart. Not only do they sell a few variations of the R-McN atlas (large type, trucker's, regular) -- but they also have an edition in which all of the US and Canadian Wal-Mart locations are shown in indexes by state. As a traveler it's quite often handy to find a Wal-Mart store -- since they have darned near everything a wanderer might want, and having the map include all locations makes finding one of 'em easier. A bonWal Mart copy is priced at $12.95, the very same content plus the store listing is sold for $5.97 or so. Save money, but the W-M version.
The Rand-McNally maps, while pretty good, have their failings -- for instance, the Upper Peninsula of Michigan -- where Nancy and I live -- is displayed poorly, maiking travel to and through it much more difficult than it really is.
We look forward to seeing you here. We'll be at Bub's to provide some coverage (and I've already confirmed with Delvene that I can get daily run logs).