In the early to mid 1980’s I was in a second-hand bookshop in north London and saw a pile of these. Never heard of them before despite being an avid SF reader. About a hundred of them sitting there staring at me. I negotiated to take them all (I seem to recall he wanted £1 each and I got him down to 50p to take the lot off his hands, but memory invents a lot of shit sometimes - maybe I imagined those prices).
Anyway, I’ve still got them and a while later I started subscribing. Started 1986 and only ended a year or two ago when I realised I could not keep up and would be lucky to read all the unread back issues before I shuffle off…
The job lot included copies from 1962 through to 1979. I have all of 1970 except the one described here - February - and March is also missing.
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I have to say the editing has got a lot worse in recent years. I’m one of those readers who absolutely hates to be jolted out of my imaginary world by typos and grammar errors that jump off the page and shout rudely at me. (The past participle of dive is dived. Dove is a bird. Yeah - I’m British.) 
But those first hundred or so… one of the best impulse buys I ever made.
(PS Hint. IMHO BoingBoing blog page works best when there is a teaser and a link to the full post. Scrolling forever past umpteen metres of screen to get to the next post is not a good user experience. Several of the newer contributors seem not to get this.)
