Piper Cub "Grace the Ace" – 80 Spins

Searching through my old slide collection I came across one of a J3-65
Cub marked “Grace the Ace” (N309H) in large titles down the side – tucked away
in the back of a Hangar in Lethbridge , Alberta back in 1980. here’s
the Photo

http://www.abpic.co.uk/photo/1165897/

It had a notice in the Cockpit window saying something about holding a
record for 80 Spins.

Have searched the web – with no result – for more info . Wish I had
photo’d the notice.

Does anyone have any more info please ?