Wacky Packages 1-16 timeline
This is the current best guess at the timeline for the release of series 1-16.
March-May 73 - 1st series (long release)
June-Aug 73 - 2nd series (also long release)
August/Sept 73 - 3rd series (start of the frenzy, quickened pace...)
Oct/Nov 73 - 4th series (I've heard of 4ths given at Halloween!)
Dec/Jan 73/74 - 5th series
Mar/Apr 74 - 6th series (I KNOW I was in school when the 6th came out)
May/June 74 - 7th (I remember the 7th,8th,9th in summer for CERTAIN!)
July 74 - 8th (2nd frenzy starts, pace picks up again...)
Sept/Oct 74 - 9th
Oct/Nov 74 - 10th
Nov/Dec 74 - 11th (Boom, Boom, Boom, these sets ran right together)
Jan 75 - 12th ("Tues, Jan 28" date written on the 12th sheet auctioned by topps in July, 2002)
Feb/Mar 1975 - 13th (Dated 1975 now)
Apr/Jun 75 - 14th
July+...1975 - 15th... (these took longer & lasted longer, and we all thought it was over)
Late 1977 - 16th (very low distribution & short release time, sticker copyright
was 1976, but the shipping cases say 1977)