U.S. Park Ranger Karl A. Jacobson was killed on November 11, 1938 while on patrol in the Schoodic District of Acadia National Park.

A memorial was installed in 2019 at the Schoodic Woods Ranger Station. The inscription on the plaque reads as follows:

On November 11, 1938,
U.S. Park Ranger Karl A. Jacobson
was fatally shot while patrolling the
Schoodic District
of Acadia National Park.
His service and sacrifice to
the National Park Service and to
the people of this country will never be forgotten.

National parks across the country acknowledge the lives of park rangers that have been taken in the line of duty. Their memorials looks similar--each has a plaque that describes the tragic incident that led to their death and each features the iconic ranger hat on top of the rock, as if it was set down for just a moment.. A full listing of national park law enforcement rangers killed in the line of duty is available at “A Legacy of Honor.”