Some scans from Time magazine in 1942, mapping out possible routes Germany might take to conquer the U.S. Although logistically ridiculous given the actual situation, the maps have all the great design and typographical sensibilities of the era, along with its wonderfully blunt attitude. What's the first thing the Nazi war machine does upon setting foot on American soil? Reunify with its fifth column legions, naturally. Good times.
The Ptak Science Book website has a host of wonderful snippets from other old books as well, including this book of advice for girls on how to snare a man, and one on date technique so as to "attach him as a permanent decoration."