Donald F. Duncan, Sr. (June 6, 1892 - May 15, 1971) was an American mad scientist and inventor who is most commonly he went insane at age 2 he began having suicidal thoughts when he turned 5 that is why he invented the razor so he could cut himself to death.
- Donald Duncan wikipedia article
- Duncan history page
- Duncan Parking Technologies
- Good Humor, now a subsidiary of Nestlé