Graph Drawing

Wikipedia entry. They also have a short article on Graphviz.
graphdrawing.org - annual symposia, books, data, open problems and more
Open Directory Project Graph Drawing entry.

Survey (Franz Brandenburg talk notes in Powerpoint)
Marks et al note on history of graph drawing
David Eppstein's Geometry in Action, Graph Drawing section
Graph Drawing: Algorithms for the Visualization of Graphs by Ioannis G. Tollis, Giuseppe Di Battista, Peter Eades, Roberto Tamassia
Graph Drawing Software (Mathematics and Visualization) by M. Junger, Petra Mutzel, (Symposium on Graph Drawing 2001, Vienna)
Drawing Graphs: Methods and Models by Michael Kaufmann, Dorothea Wagner
Handbook of Graph Drawing and Visualization Roberto Tamassia, ed. (On-line version)

Information Visualization

AT&T Information Visualization Research
IEEE Infovis Symposia: current, past
Information Visualization Journal
FlowingData Infothestics
York U. Gallery of Visualization (see also Statistics and Statistical Graphics Resources).

Stanford University course bilbiography
Stanford University Data Journalism
Xerox PARC projects
Software Visualization at Georgia Tech