Blissymbol Dictionary: Comprehensive online dictionary of the Blissymbolics Language - used by linguistically disabled persons.
Dictionary of Symbolism: An online aid for exploring the meanings of symbols.
Review of Liungman's Dictionary of Symbols: Critical review by Seth Maislin, indexer.
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.
