Gilford R. Duggan was a professional football player in the National Football League and later the All-America Football Conference. He played in the NFL from 1940 to 1945. He played for the New York Giants, Chicago Cardinals and "Card-Pitt", a team that was the result of a temporary merger between the Cardinals and the Pittsburgh Steelers. The teams' merger was result of the manning shortages experienced league-wide due to World War II. In 1946, Duggan jumped to the rival AAFC, where he played with the Los Angeles Dons in 1946 and the Buffalo Bills in 1947.

References

• Forr, James (2003). "Card-Pitt: The Carpits" (PDF). Coffin Corner. Vol. 25, no. 3. pp. 1–8. Archived from the original (PDF) on 2012-10-22 – via Professional Football Researchers Association.