These used to be fairly common on the Great Lakes, side loaded by longshoremen/stevedores using gangplanks/ramps. The later ones loaded palletized goods via forklifts but I don't believe any survive in their original form after railroads and trucking took over their target business. Some had their side hatches welded up when converted to other uses, like the still sailing cement carrier Stephen B. Roman.

Today, some types of cargo aircraft are referred to as package freighters.

This Milwaukee was built in 1902 by the Chicago Ship Building Company.

Washburn-Crosby was of course the precursor of General Mills. The name lives on, in a sense, in the TV and radio stations "WCCO" in Minnesota.

When a freighter is mentioned, horizontal hatches in the main deck come to mind. I was surprised to see what appears to be vertical hatches in the sides. I would assume to make it easier to load/ unload bagged flour? Also interesting to see the secondary steering wheel exposed to the elements.