<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by LEB:
Hey, that's not a map! It's one of those kid travel puzzles or maybe it's from Family Circus: "Billy runs an errand". 
Musta been a long trip...
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What I did is I entered every airport code in the lower 48 I could think of at that moment. One I forgot, and I've been to, is CHO. Anyway, I've been to many of those airports (such as LYH and ROA back in the good ol' days of Piedmont's 737-200's), but not AEX, LFT, CGR, etc. In fact, I don't know if DAN (Danville, VA) has ever had scheduled service.