Murray Leinster 
Gateway to Elsewhere 

Tony Gregg was just an ordinary everyday American until the day he came into possession of an old Barkut coin. He knew it was more than just a collector’s curio because there was no such place on any map of Earth, past or present. He learned then that it could be used as a key — a key to a GATEWAY TO ELSEWHERE.That was the beginning of one of the most fabulous and fantastic adventures that ever befell a young man looking for excitement. For Gregg plunged forthwith into a fourth-dimensional world of the Arabian Nights, where the djinns of Aladdin’s Lamp were rampaging realities, and a lovely princess was waiting to be rescued!