Humor genre listed.
Known printing information:
48th printing: circa 1977. No series number or ISBN listed on cover. Actual printing date not listed, date a guess based on publisher and cover price listed.
50th printing: circa 1979. Series number and ISBN listed on cover. Actual printing date not listed, date a guess based on cover price listed. This book also a part of the Snoopy boxed set (# 6-4228).
Unknown printing: December 1981, 1.75 USD cover price. Price and date from Books in Print online.
Unknown printing: circa 1983, 1.95 USD cover price. Price from Books in Print online.
Currently no known 1.50 USD cover price version.