Tony IDs some Pawnee Corn:
The center ear on the left picture appears to be the Pawnee Blue flour, a blue-black flour corn with ears 8″ to 10″ long, usually 8 rowed, plants 6′ to 8′ tall, 110 day variety.
The center ear in the right picture looks like Pawnee Red Flour corn, color light red, ears 6″ long.
This kind of thing is one of the absolute best bits about the internet.