Photograph dated Jan. 7, 1941. Original caption reads: "This view shows all of the Street Department sanding units consisting of four sidewalk sanding sleds, hauled by the sidewalk tractors, and three Superior Sand spreaders mounted on our dump-body trucks. These units are kept very busy during and after every sleet storm. With this equipment the Street Department handled more than 2500 cubic yards of sand mixed with approximately 100 tons of rock salt, during the past winter."