I have that one too O'f - but the one covering 1969 is the most extensive of those I've seen.

Why does the weight of an Astra RNR 1A matter all these years on, or the gearbox for the Ferrari 612, or the wheelbase of a Lotus 64? It doesn't - but I misplaced my little green book a few weeks ago, and was delighted when I found where I'd left it.