The Monongahela was a diesel towboat with steel hull and single prop, built in Slidell, LA by Canulette Shipbuilding Co. in 1939. It was 108 x 27 x 6, and was powered by a Cooper-Bessemer LT-6 diesel making 800 hp at 300 rpm. Originally she was named Monrola and was owned by River Terminals, who sold her to Central Barge in 1945. They renamed her L. P. Runkel, and transferred her in July 1952 to Mississippi Valley Barge Line. Later she was operated by Eagle Wharf & Towing at St. Louis, where she was named Bald Eagle in 1960. A year later she went to the Columbia Marine Service, Cincinnati, and renamed Cathleen K. Marine Sales & Service, Inc., Charleroi, PA, bought her in 1965 and renamed her Monongahela. Sometime after this she was sold to E. P. "Bill" Grimm. She sunk on the Allegheny River in Pittsburgh around March, 1981; see the following pictures.
Photo courtesy of Dan Owen. It shows the boat as it was owned by Marine Sales & Service, Inc., before Bill Grimm owned it.