This from Wayne Stewart:

The Gary Fire Department operated this 1959 Maxim “S” model pumper Serial #2165 assigned to Engine Co. No.12.¬†¬† It had a 1,000-gpm pump, a 300-gal. booster tank, and a 100-gal. foam tank. It also carried the following ladders; a 35′, a 24′, a 14′ roof ladder, and 10′ roof ladder. Engine 12 was put in service as a new company in 1959 in a new firehouse.

1959 Maxim S-Model fire engine

From The Collection of Wayne Stuart