J. R. Vanstone had 6 appointments :

C.J.M. - C.M.B. Specialized Editors		1965 - 1966
Board of Directors		1969 - 1973
Research Ad-Hoc Committees		1972 - 1972
Board of Directors		1981 - 1985
C.J.M. - C.M.B. Specialized Editors		1984 - 1988
Education Committee		1993 - 1995