What was the first tractor with live PTO?

What was the first tractor with live PTO? International Harvester Company (IHC) was first to market with a PTO on a production tractor, with its model 8-16, introduced in 1918.

International Harvester Company (IHC) was first to market with a PTO on a production tractor, with its model 8-16, introduced in 1918.
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