I've just completed a marathon scanning session for my website. I've lost track of which vintage Alton Guides are online and so much of the content was reused in multiple versions over the years. I think this one is from 1978, but could perhaps be 1979. As far as I can tell, they're undated for the most part so they don't have to be updated every year - which makes sense, given the nature of the park at the time. Enjoy, folks.