In the 1950’s through the 1970’s many different kinds of buses were used.
The photo below from 1960 shows Chartered TTC buses: In the 1960’s the camp relied on independent drivers which meant that all sorts of vehicles (including station wagons) were used. Some examples below.
This is this photo is Jackie Blake, who was the Peewee Unit Head for many years:
Station Wagons were commonly used in the mid-late 1960’s.
In the 1970’s, passenger vans were standard, in various colours: