About all I know of Atlas engines is I remember my father speaking of this brand of engine.
He attended a diesel school on the east coast in the '30s.
I'm looking thru a book he had -- Diesel Engine Plan book and Catalog vol 2,-- 1937.
Has information, pictures and descriptions of some of the Atlas Imperial models, and
also, article about them building their first diesel in 1915, using one of their existing Distillate engines
as a foundation.
Believe some are still in service.