The Circle, Vol. 49, No. 4, Summer 1970 The Circle, Vol. 50, No. 2, Winter 1970-71 The Circle, Vol. 48, No. 3, Spring, 1969 The Circle, Vol. 48, No. 4, Summer, 1969 The Circle, Vol. 49, No. 1, Autumn 1969 The Circle, Vol. 49, No. 2, Winter 1969-70 The Circle, Vol. 47, No. 3, Spring, 1968 The Circle, Vol. 48, No. 1 & 2, Fall & Winter 1968 The Circle, Vol. 47, No. 4, Summer 1968 The Circle, Vol. 46, No. 3, Spring, 1967 The Circle, Vol. 47, No. 1, Fall 1967 The Circle, Vol. 46, No. 4, Summer 1967 The Circle, Vol. 47, No. 2, Winter 1967-68 The Circle, Vol. 46, No. 1, Fall 1966 The Circle, Vol. 45, No. 3, Spring 1966 The Circle, Vol. 45, No. 4, Summer 1966 The Circle, Vol. 46, No. 2, Winter 1966-67 The Circle, Vol. 45, No. 1, Fall 1965 The Circle, Vol. 44, No. 3, Spring 1965 The Circle, Vol. 44, No. 4, Summer 1965