http://pec.lib.wvu.edu/record/P1732320102010 pro baseball in Mercer County, West Virginia. Leaflet. Includes the 2010 game schedule for the Bluefield Orioles and the Princeton Rays. <br />Mercer County Convention and Visitors Bureau (Bluefield, W. Va.) Baseball--West Virginia.Bluefield Orioles (Baseball team)Princeton Rays (Baseball team)14256