Before revision: ; 1970 Cyril W. Cleverdon; 1968 Carlos A. Cuadra; 1967 Robert Fairthorne; <ref> Brookes, B.C.
After revision: ; 1970 Cyril W. Cleverdon; 1968 Carlos A. Cuadra; 1967 Robert Fairthorne; Brookes, B.C.