Maps and Atlases: National vs 'Local'
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The first basic decision any map maker has to make is the scale of the map. How much real estate in his map or book can he allocate to how much real estate on the ground. The 'problem' with the major national atlases, and Rand McNally and Fodor's are among the best, is that they have to squeeze nearly four million square miles into a few square feet of paper. In doing so, they have to make decisions on which roads, towns, parks and other attractions to include and, sadly, which to leave out. They will of course and as you have noted make different editorial decisions. If you want more detail you have to sacrifice the area covered to make more paper available for the areas you do cover. Enter atlases which only cover a state or a few smaller states. These generally go by the name of gazetteers (although that's a misnomer) and two of the best series of such atlases are put out by Delorme and Benchmark. You can find more in depth reviews of mapping products here.
AZBuck