Detroit, 18th May, 1870.
Sir:
The Steamer Brooklyn proceeds to Point Aux Pins on special service.
In case you may not have been advised by the head of your department, I am authorised to inform you that she is to have free access to all Canadian Ports on Lake Superior, moving under orders from Col. Bolton.
I am, etc.,
(Signed) F. W. Cumberland.
Jos. Wilson, Collector of Customs,
Saulte Ste Marie, Ont.