F. H. Clarke had 6 appointments :

Research Committee		-	, ex-officio
Board of Directors		1977 - 1979
Board of Directors		1981 - 1985
Vice-Presidents		1985 - 1987
C.J.M. - C.M.B. Scientific Editorial Board (1986 onwards)		1986 - 1991
Other Ad-Hoc Committees		1987 - 1988	, served as chair