Panzerfaust Magazine No.64, released around May / June 1974... great little mag with some wonderful articles. Started by Don Greenwood in 1967... it became Campaign magazine (not to be confused with Campaigns Magazine) at some point in 1976 having changed hands a few years earlier. Lots more info on the magazines' history over here on TacticalWargamer. I've scanned the whole issue as a PDF but I'm waiting on my accomplice in arms to crop it as I don't have a PDF editing license... where there's a will etc.
The participants in this game read like a gathering of the greats... Gary and Ernie Gygax, Rob Kuntz and Mike Monard. A nice introduction and a very readable storyline... fun times were had I think. Played using the TSR 'Wild West' campaign rules... I assume they mean the Boot Hill booklet?