The Hart-Parr Old Reliable 30-60 is a standard-tread farm tractor produced from 1907 to 1918 by Hart-Parr in Charles City, Iowa, USA. It features a large 38.6L 2-cylinder kerosene engine, a 1-speed gear transmission with 1 forward and reverse gear, and delivers 30 hp at the drawbar and 60 hp at the belt. The tractor is two-wheel drive with manual steering and an open operator station with a steel canopy. It weighs 20,100 lbs and has dimensions of 200 inches in length, 106 inches in width, and 148 inches in height. A total of 3,798 units were built.