SPRINGFIELD RACEWAY-BOLIVAR SPEEDWAY TOW TRUCK

I just bought a '75 Ford F350 Tow truck that was owned by Lee Robinson who operated Lee's Amoco Service Center at Grant and Commercial in Springfield, MO This truck was used at Springfield Dirt Track (now Springfield Raceway) and Bolivar Speedway in the late '70s. The 2-owner truck has a 390 4-speed and 39,000 original miles. It was made into a wrecker by Porter's Ready-Built in Kansas City and was their demo truck until Lee Robinson bought it. I am looking for history and photos on my truck. Thanks.