1966 – Volume 1
Issue 1 (January)
Issue 2 (June)
Issue 3 (September)
Issue 4 (December)

1967 – Volume 2
Issue 1 (March)
Issue 2 (June)
Issue 3 (September)
Issue 4 (December)

1968 – Volume 3
Issue 1 (March)
Issue 2 (June)
Issue 3 (September)
Issue 4 (December)

1969 – Volume 4
Issue 1 (March)
Issue 2 (June)
Issue 3 (September)
Issue 4 (December)

1970 – Volume 5
Issue 1 (March)
Issue 2 (June)
Issue 3 (June)
Issue 4 (December)

1971 – Volume 6
Issue 1 (January)
Issue 2 (June)
Issue 3 (September)
Issue 4 (December)

1972 – Volume 7
Issue 1 (March)
Issue 2 (June)
Issue 3 (September)
Issue 4 (December)

1974 – Volume 8
Issue 1 (March)
Issue 2 (June)
Issue 3 (September)
Issue 4 (December)

1975 – Volume 9
Issue 1 (March)
Issue 2 (June)
Issue 3 (September)
Issue 4 (December)