"The Erdös Number Project"* The Man Who Loved Only Numbers - Royal Society Public Lecture by Paul Hoffman (video)* Radiolab: Numbers, with a story on Paul Erdős* Fan Chung, "Open problems of Paul Erdős in graph theory"
"The Erdös Number Project"* The Man Who Loved Only Numbers - Royal Society Public Lecture by Paul Hoffman (video)* Radiolab: Numbers, with a story on Paul Erdős* Fan Chung, "Open problems of Paul Erdős in graph theory"