This from Wayne Stuart:

The Gary Fire Department operated two of these 1966 Mack “C” model pumpers. They had 1,000-GPM pumps and 300-gallon booster tanks. This pumper was assigned to Engine Company 4. It carried Mack serial #C95FD-1524.

from the collection of wayne stuart

1966 Mack "C" model pumper

The Gary Fire Department 1966 Mack “C” model pumper, 1,000-GPM pump, 300-gallon booster tanks assigned to Engine Company 4. Mack serial #C95FD-1524.
from the collection of Wayne Stuart