Cataloguing some of them was hard, as lots just have an issue number with no date, and it is well known that some magazines were wildly inconsistent about numbering, with different numbers for UK and US editions, different publishers and so on. I realised too late that I should have been rather more careful about noting the publisher and country. Bother.
XFEDI
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Analog is nice and consistent about having a year and month on the cover, and that's most of the mags, although there are still differences between US and UK editions that I haven't captured.