This is what used to be known as the Bluegrass Festival held in January, now happening in October. The tractor show and tractor pulling is Saturday only, but the Festival runs all weekend.
For more information - -
https://pinalfairgrounds.com/harvest-festival
Arizona Early Day Gas Engine and Tractor Association is a 501(c)4 non-profit organization.
PO BOX 56386, Phoenix, AZ 85079, USA (623) 435-3955