This is the oldest style Allan Herschell Little Dipper model with flat turns and the oldest style of cars with "AH" grills.
The park owner stated the roller coaster opened in 1946 if she remembers right. This seems a little early for an Allan Herschell roller coaster as it isn't believed Allan Herschell acquired the manufacturing rights to the Little Dipper from David Bradley until late 1948. It could mean this roller coaster is an old David Bradley design. The train containing "AH" grills would make this unlikely.