New York State Archives, NYSA_A4237-78_B2F4_30
A poster encouraging people to use fats other than butter in their cooking during World War I, September 1, 1917.
Clare, John D. World War I. Harcourt Children's Books, February 1995. ISBN: 0152000879
Adams, Simon. World War I. DK Publishing, Inc., Augsut 2004. ISBN: 075660740X
Levine, Beth. When Christmas Comes Again: The World War I Diary of Simone Spencer. Scholastic, Inc., October 2002. ISBN: 0439439825
Steward, Gail. World War I. Blackbirch Press, September 2003. ISBN: 1567117732