Gertrude Ederle

Decide which of these sites about "Gertrude Ederle" are not very useful, then send your teacher an email explaining why.

http://www.msu.edu/~grawbur1/iahweb.html

http://en.wikipedia.org/wiki/Gertrude_Ederle

http://www.biographybase.com/biography/Ederle_Gertrude.html

http://sportsillustrated.cnn.com/siforwomen/top_100/42/

http://www.britannica.com/eb/article-9031985/Gertrude-Ederle