It might not be cotton, but here is a picture of the SOUTHLAND unloading frieght on to the Louisville Wharf in 1926. Notice all the freight stacked up on the boiler deck and around the main cabin. Passenger space was secondary when room was needed for high paying frieght. Wonder if mate H.M. (Doc) Carr is on the head of the boat directing traffic. The famous SOUTHLAND whistle is clearly visible in this picture as is the Government Dam above the falls.
When the wind and current are just exactly right a person can stand on the Clark Bridge and see the trace of the old dam in the surface ripples. The Indiana end was just a hundred feet, give or take, below the bridge. That is an interesting picture. Those bales could be wool, rags or paper, but not cotton. Cotton bales were much larger. Notice the hopeful ice cream vendor with his little cart. They were once common in Louisville. I never saw one of those guys who did not chew tobacco! They had no water, so when you ordered chocolate you got dabs of strawberry, or vanilla along with it that had clung to the scoop. In 1933-34 they sold three scoops for a nickle. They attracted customers with a group of harness bells mounted on a hinged stick by the cart handle. Ah, the good old Klotz Candy Co! That picture must have been made between 1925 and 1929. Look at those pea-shooter stacks. Other mates were Skeeter Carr and Jess Singleton.