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poultry geneticist

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Dr. Charles W. Knox, senior poultry geneticist, inspects the newly hatched chicks preparatory to banding them, 1/19/38

Dr. Charles W. Knox, senior poultry geneticist, inspects the newly hat...

Picryl description: Public domain photograph of building, free to use, no copyright restrictions image.

Dr. Charles W. Knox, senior poultry geneticist, inspects the newly hatched chicks preparatory to banding them, 11938

Dr. Charles W. Knox, senior poultry geneticist, inspects the newly hat...

A black and white photo of a man putting apples in a box, Library of Congress Harris and Ewing collection Title from unverified caption data received with the Harris & Ewing Collection. Gift; Harris & Ewing, I... More