Contributions by J.C. Duffy

MAD Magazine #496December 2008
- List of all contributors (Author with Darren Johnson, Kevin Pope, Jacob Lambert, Greg Benson, Jeff Kruse, Charles Akins, Desmond Devlin, Ward Sutton, Rick Tulka, Tom Richmond, Dick DeBartolo)
MAD Magazine #510August 2011
- When the Going Gets Duff - "What would sound good on Facebook?" (Artist, Writer)

MAD Magazine #30September 2010
- Salada Mista: ‘Tramas da Torradeira Transtornada’, ‘A Pia da Cozinha – Programas de TV sobre Médicos Bizarros’, ‘Prós e Contras do Kindle’, ‘Quando a Coisa Tá Meio Duff’, (Author with Sarah Dyer, Evan Dorkin, Nate Fakes, Barry Liebmann)