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Books about Moncena:
The coupon ballot: Memorial of Moncena Dunn, of La Crosse, Wis., relative to the coupon-ballot system as authorized... by Moncena Dunn (1911)
Wiki information Moncena:
Moncena Dunn, was a farmer, telegrapher, optometrist and inventor of the fraud-proof, color-coded coupon ballot.
Moncena Dunn, was a bookkeeper and cutler inducted into the Union Army. Dunn was severely wounded at the Battle of Fredericksburg, and is known for his postwar testimony before Congress about the harsh, murderous conditions in Confederate prison...