I rather suspect that's a glitch in the typesetting, Terry...

Possibly mucked up by the formatting and then unnoticed by proofreaders trying to get the book out and published in time for the 51st Australian Grand Prix. Details like the lap times are correct, just most of the entries are lined up in the wrong spot.

Not Graham's doing at all. Which can't be said for the dog's breakfast he made of the 1949 grid 'explanation'.