Symbols

Blissymbol Dictionary
An online dictionary of the Blissymbolics Language - used by linguistically disabled persons.
http://www.symbols.net/blissymbolics/dictionary/

Dictionary of Symbolism
An online aid for exploring the meanings of symbols.
http://www.umich.edu/~umfandsf/symbolismproject/symbolism.html/

Review of Liungman's Dictionary of Symbols
Critical review by Seth Maislin, indexer.
http://taxonomist.tripod.com/indexing/liungman.html

Symbols.com
The world's largest online encyclopedia of graphic symbols, ranging from ideograms carved in mammoth teeth by Cro-Magnon men, to hobo signs and subway graffiti.
http://www.symbols.com/