NASCAR Throwback Thursday: Five ‘dirty’ photos from Eldora Speedway

The NASCAR Camping World Truck Series is about to get dirty. 

With less than a week to go before the 2014 Mudsummer Classic at Eldora Speedway (Wednesday, July 23, on FOX Sports 1), we celebrate Throwback Thursday with five classic photos from the "Big E."

1977: Gary Bettenhausen flips his car during a USAC Sprint Car race. 

1979: Steve Kinser (No. #11) races Sammy Swindell at the front of the field during a World of Outlaws sprint car race. 

2007: Jeff Gordon #24 leads Carl Edwards #99 during the Nextel Prelude to the Dream. 

2009: Tony Stewart celebrates with his team after winning the Gillette Young Guns Prelude to the Dream. 

2011: The tire of Tony Kanaan (not pictured) bounces in front of Justin Allgaier during the Prelude To The Dream.