Hi Biggles! I had the honour and the pleasure of meeting Grace in the 70s when she came to South Africa with her Flying Circus and i saw her do the Spins in a Pitts Special if i recall correctly. i dont remember how many it was but she held the record at the time. i also saw how she broke bags of flour attached to the wingtips on the runway as she flew past.( not in the Pitts) it was Stunning!!!
Best regards
Greg.