1
Edwards, Richard,
| D.C. Heath |
1975
2
Bergman, David,
| D.C. Heath |
1983
3
Steele, Ross.
| D.C. Heath |
1985
4
Dale, Nell B.
| D.C. Heath |
1985
5
Henderson, J. Vernon.
| D.C. Heath |
1991
7
Boyer, Paul S.
| D.C. Heath and Co. |
1996
8
Boyer, Paul S0
| D.C. Heath and Co. |
1996