1970s

Quarterlies from the ’70s:

Winter 1969-1970 (Volume 37 #142)	Spring 1970 (Volume 23 #143)	July 1970 (Volume 37 #144)
Fall-Winter 1970 Spring-Summer 1971 (Volume 38 #145)
Fall 1971 – Winter 1972 (Volume 39 #146)	Spring 1972 (Volume 39 #147)	Summer-Fall 1972 Winter 1972-1973 (Volume 39 #148)
Spring-July 1973 (Volume 40 #149)
Fall 1973 – January 1974 (Volume 41 #150)	Spring 1974 (Volume 41 #151)	Fall 1974 – Spring 1975 Fall 1975 – Spring 1976 Special Bulletin (Volume 41 #152)

Summer 1976 (Volume 43 #153)
1977 (Volume 44 #154)	1977 Special Bulletin (Volume 44 #154)
1978 (Volume 45 #155)	April 1978 Special Bulletin (Volume 45 #155)
April 1979 (Volume 46 #156)