I don't think they came with a manual
I purchased my used 1966 in 1969 from the dealer that originally sold it,and the only manual they had was the Universal Atomic Four manual. I sailed the boat for 34 years. After Islander went out of business Yachtcraft was producng the boats.They had a generalized manual.I have a copy of it. If I can be of any further service let me know as I can tell you what problems I had run into. Bill