How about a pair of Mack "L"s???
I took this picture at a muster in the early '80s.
The open cab is a '54, 750 GPM Pumper. It was owned by the Laurelton Fire Dept. (which I belong to) in Irondequoit, Monroe Co., NY. It is now owned by a private collector in Vermont.
The closed cab is a '51 750 GPM Quad. It is owned by the Geneseo (Livingston Co.) NY Fire Dept. This unit is currently being restored.