Oklahoma: The Sooner State World Book Encyclopedia, 2008 ed., s.v. "Oklahoma"
This encyclopedia article gives the basic information about the state of Oklahoma. It includes maps, charts, graphs, symbols, and pictures of the landscape. This would be a first resource to consider to find topics for further research. Look in volume 14 (the N/O volume) and look for "Oklahoma." Use your guidewords--they are all in alphabetical order.
Oklahoma: The Sooner State
World Book Encyclopedia, 2008 ed., s.v. "Oklahoma"
This encyclopedia article gives the basic information about the state of Oklahoma. It includes maps, charts, graphs, symbols, and pictures of the landscape. This would be a first resource to consider to find topics for further research. Look in volume 14 (the N/O volume) and look for "Oklahoma." Use your guidewords--they are all in alphabetical order.