Marshall B. Ketchum: Began as Chief Instructor of the Lincoln Optical College.
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Marshall B. Ketchum: Moved to Lincoln, Nebraska to join the faculty at the Lincoln Medical College.
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Marshall B. Ketchum: Obtained a license to practice medicine in California.
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Marshall B. Ketchum: Graduated from the Eclectic Medical Institute in Cincinnati, Ohio.
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Marshall B. Ketchum: Studied pharmacy and graduated in Toronto, Canada.
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Marshall B. Ketchum: Born on October 11 in Brighton, Ontario, Canada.
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The American Optometric Association is founded.
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The American Pharmaceutical Association is founded.
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