U.S. Printing History First Printing: October, 1965 Second Printing: November, 1965 Third Printing: June, 1966 Fourth Printing: August, 1966 Fifth Printing: August, 1966 Sixth Printing: September, 1966 Seventh Printing: October, 1966 Eighth Printing: March, 1967 Ninth Printing: July, 1967 Tenth Printing: September, 1967 Eleventh Printing: September, 1967 Twelfth Printing: October, 1967 Thirteenth Printing: January, 1968 Fourteenth Printing: March, 1968 Fifteenth Printing: July, 1968 Sixteenth Printing: October, 1968 Seventeenth Printing: December, 1968 Eighteenth Printing: March, 1969 Nineteenth Printing: September, 1969 Twentieth Printing: September, 1969 Twenty-first Printing: October, 1969 Twenty-second Printing: January, 1970 Twenty-third Printing: March, 1970 Twenty-fourth Printing: June, 1970 Twenty-fifth Printing: September, 1970 Twenty-sixth Printing: November, 1970 Twenty-seventh Printing: February, 1971 Twenty-eighth Printing: June, 1971 Twenty-ninth Printing: August, 1971 Thirtieth Printing: November, 1971 Thirty-first Printing: December, 1971 Canadian Printing History First Printing: November, 1965 Second Printing: February, 1966 Third Printing: August, 1966 Fourth Printing: April, 1967 Fifth Printing: April, 1968 Sixth Printing: April, 1969