Originally Posted by cmnorton
Other than the O'Reilly Book by Levine, Mason, and Brown, I am looking for pointers to Lex/Yacc books and online information.
You probably can find the needed info using WEB search.
But why are you interested in lex/yacc/flex/bison rather than in newer parser generators and techniques ?
For example, look up "packrat parser", "Elkhound parser", "Elsa parser".