Notes:
The copyright dates for issues #1 and #2 listed in the Catalog of Copyright Entries, Third Series, Vol. 3, Part 2, No. 1, Periodicals, Jan.-June 1949 are both recorded as "Mar. 11". The same dates are recorded in the February 4, 1977 copyright renewal. Based on the entry for issue #3, March 11 appears to be the correct date for issue #1, while the correct date for issue #2 is likely May 11.