Jeffery Straker's Prairie Skyscraper Concert Series - Gravelbourg SKJeffery Straker's Prairie Skyscraper Concert Series - Gravelbourg SKSat, Jul 6, 7:00 PMS0H 1X0 • Gravelbourg, SK$24.76Save Jeffery Straker's Prairie Skyscraper Concert Series - Gravelbourg SK to your collection.Share Jeffery Straker's Prairie Skyscraper Concert Series - Gravelbourg SK with your friends.