Counter joined the Harvard faculty in 1970, first serving as a postdoctoral fellow and assistant neurophysiologist at Harvard Medical School and
Massachusetts General Hospital. In 1970, the
U.S. Secretary of Health, Education and Welfare named Counter to
National Institute of Mental Health's National Advisory Mental Health Council. He remained director until his death in 2017. In 1986, Counter was approached by an
Inuk who claimed, without adducing any evidence, to be the child of
Matthew A. Henson who subsequently introduced Counter to another Inuk who claimed, again without evidence, to be the child of
Robert E. Peary. Counter was elected to
The Explorers Club in 1989. Counter designed
Arthur Ashe's memorial at
Woodland Cemetery in
Richmond, Virginia, dedicated on what would have been Ashe's 50th birthday on July 10, 1993. ==Awards and honors==