SFY
Science Fantasy/ Impulse
British
Introduction
1950-54
# 1 - 11
1955-56
# 12-20
1957-58
# 21-32
1959-60
# 33-44
1961-62
# 45-56
1963-64
# 57-68
1965-66
# 69-81
Impulse
1966-67
# 1-12