Oh, awesome! Great pic of Bonzo. I had never even heard of BAM until I saw this article.
Here's an article from Ciao2001, 13 May 1973:
cover
TOC
pg012
pg013
pg014
And I completely forgot to resize these images, so uh... cover's, like, 2350 x 3065 or something. Slow connections be warned.
Regarding Jimmy's smoking habits...
I have about 3200 pics of Mr. Page, mostly between 1968 and 1980 during Zep with a couple from the Yardbirds era and before. Even though this will make me sound like I have autism, I went through each pic and put keywords on them -- so I could find 'em easier. Things like "blue dress shirt" or "double-necked." Every time I saw a cigarette, I added that as a keyword.
SO! I searched my Jimmies for "cigarette," and the earliest date I have is April 1, 1977 -- the Dallas show that started the 1977 US tour.
Unless you count this:
I found Sep 1974 as the date for it, but that could be wrong. Also, that sucker may not even be lit.