Many thanks to Pat Iacovone and Murray Ward for materials used in this index. Information on Fawcett Comics' annual sales of Ibis from 1942 to the 1948 is taken from the book "Juvenile Delinquency" (from 1950).
CIRCULATION DATA
1942 - 208,890
1943 - 271,061
1946 - 667,796
1948 - 212,735