[verso] A tractor disk is used to cover potatoes which had not been planted to sufficient depth. This practice is not generally
necessary as adjustments were later made on the planting machines. ; Photographer: Stewart, Francis ; Newell, California.
[verso] A tractor disk is used to cover potatoes which had not been planted to sufficient depth. This practice is not generally
necessary as adjustments were later made on the planting machines. ; Photographer: Stewart, Francis ; Newell, California.