This 1939 photo shows O'Neil Dairy's Walker Dynamotive multi-stop delivery truck parked beside their building (known as the Ames Armory).   The 1905 National Guard Armory building was constructed of Munn "Miracle" concrete blocks.  The 120 pound oversize blocks were made at Munn Lumber on the east side of Duff, just two blocks away from this building.  The Ames Daily Tribune's building can be seen across Fifth Street street.
(Farwell T. Brown Photographic Archive)

O'Neil's Dairy made premium ice cream, with butterfat content as high as 6 to 7%.  It melted in your mouth and clung to your lips.  The scoop was a way to exercise some degree of portion control when serving ice cream.  This one was used for a 5 cent ice cream cone that consisted of one scoop.