When I was small, every morning the Milkman pulled up in front, came walking up our side-drive, and picked up the empty bottles my Mother left outside on the top step. He replaced them with full ones, all quart size, except heavy cream which was in pints. The bottles were sealed with a cardboard press-in which fitted a groove on top, then a carefully wrapped and glued paper top was over that. In very cold weather, if she was slow going out for the fresh bottles (or, maybe for MY benefit!), one or more bottles would have frozen on top, the layer of cream popping out the seal. I spooned it up like ice cream. The Divco trucks looked just like this. The driver had no seat, but drove it standing up! His door opened by sliding to one side. Those were the days, late '40s and maybe up into the mid-50s. Frank Divco delivery truck Edit: There is a most nostalgic site devoted to the promotion, preservation, restoration, operation and history of Divco Trucks here: http://divco.org/ Lots of wonderful pictures!