In the 70s RCM had a very long lead time from design submission to publication. I submitted my Cold Duck design (that was desinged in 1969) in September of 1970 and it was not published until the June 1971 issue. The plans were submitted in pencil only and had to be inked by RCM, typed or hand written articles that had to be set by RCM for printing, etc. It was a long process!