Glass plate of the screw tugs, Sinclair and Record, breaking ice on the St. Louis River in Minnesota on February 5, 1908. Ships include the screw bulk freighters, Eugene Zimmerman and Salt Lake City. Men and boys standing on the ice to watch. Inscribed 1051. Some slight chips on edges, slight loss of emulsion not affecting image. Donor: Kenneth E. Thro Collection. (20 cm. x 25 cm.)