But, the turning of the road took him by the back of the booth, and at the back of the booth a number of children were congregated in a number of stealthy attitudes, striving to peep in at the hidden glories of the place.
There are no more uses of "congregate" in the book.
Show samples from other sources
People congregated outside of City Hall to protest.
It was in the quiet at the end of the day, when we began to congregate in the open space before climbing into our caves.