I just moved my shop (an LGS) to a new location, and i found one of my rule books that used to come in the Alpha and Beta starter decks (i think they came in Unlimited and Revised too, unsure of that as i never purchased any of either set).
I am going to try and scan the entire thing tomorrow.
Album: https://imgur.com/a/AzzKy65
People have always told me i was crazy because my first real tournament deck was just something like 28 [[Lightning Bolt]] and 12 Mountains. The only rules in this book for deck construction, is it must be at least 40 cards. The rule of 4 came some time later.