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Erdõs Pál (1913-1996)
http://www.cs.elte.hu/erdos/
Tribute includes a collection of photos.
MacTutor History of Mathematics: Erdos
http://www-history.mcs.st-andrews.ac.uk/Mathematicians/Erdos.html
Biography with links.
Paul Erdos, a Math Wayfarer at Field's Pinnac
http://www.math.ohio-state.edu/~nevai/ERDOS/erdos-obit.html
New York Times obituary.
Reminiscences of Paul Erdos
http://www.maa.org/features/erdos.html
Article from The Mathematical Association of America by Melvin Henriksen.
The Erdös Number Project
http://www.oakland.edu/enp/
List of people with Erdös number at most 2.
University of Chicago: Paul Erdös
http://theory.cs.uchicago.edu/erdos.html
Tributes, obituaries, and articles.