Thanks for taking the time to research this. What was it about the 4th issue though that was still in the PD?
They renewed the copyright for issue 4, no idea why they never renewed the first 3. I knew there were a lot of renewals for the Ripley's believe it or not material, wanted to be as sure as I could with online records that the first 3 were OK. There could still be renewals for the first 3, but they are not available in the on line records, and that is all I have access to.