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Issues
- #1 August 1960
- #2 October 1960
- #3 December 1960
- #4 February 1961
- #5 April 1961
- #6 June 1961
- #7 August 1961
- #8 October 1961
- #9 December 1961
- #10 February 1962
- #11 April 1962
- #12 June 1962
- #13 August 1962
- #14 October 1962
- #15 December 1962
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- #18 June 1963
- #19 August 1963
- #20 October 1963
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- #26 October 1964
- #27 December 1964
- #28 February 1965
- #29 April 1965
- #30 June 1965
- #31 August 1965
- #32 October 1965
- #33 December 1965
- #34 February 1966
- #35 April 1966
- #36 June 1966
- #37 August 1966
- #38 October 1966
- #39 December 1966
- #40 February 1967
- #41 April 1967
- #42 June 1967
- #43 August 1967
- #44 October 1967
- #45 December 1967
- #46 February 1968
- #47 April 1968
- #48 June 1968
- #49 August 1968
- #50 October 1968
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- #52 February 1969
- #53 April 1969
- #54 May 1969
- #55 July 1969
- #56 September 1969
- #57 November 1969
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- #61 July 1970
- #62 September 1970
- #63 November 1970
- #64 December 1970
- #65 February 1971
- #66 April 1971
- #67 June 1971
- #68 August 1971
- #69 September 1971
- #70+1 printing November 1971
- #71+1 printing February 1972
- #72+1 printing April 1972
- #73+1 printing June 1972
- #74+1 printing August 1972
- #74 [15¢] August 1972
- #75+1 printing October 1972
- #76 November 1972
- #77 January 1973
- #78 March 1973
- #79 May 1973
- #80 July 1973
- #81 September 1973
- #82 November 1973
- #83 August 1974
- #84 October 1974
- #85 December 1974
- #86 February 1975
- #87 April 1975
- #88 June 1975
- #89 August 1975
- #90 October 1975
- #91 December 1975
- #92 February 1976
- #93 April 1976
- #94+2 printings September 1990
- #95+2 printings October 1990
- #96+2 printings November 1990
- #97+2 printings December 1990