Reconstruction of barn invented by George Washington wherein hooves of horses walking in circles broke wheat kernels from straw which fell through floor for collection at Mt Vernon. Washington, VA.

Reconstruction of barn invented by George Washington wherein hooves of horses walking in circles broke wheat kernels from straw which fell through floor for collection at Mt Vernon. Washington, VA.
Photo by Jim Steinhart © 2013, all rights reserved. (Ref: VAWV215)

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