For the symbolism of legend, myth, and saga compared with dreams, see—

ABRAHAM, KARL. Traum und Mythus.

RANK, OTTO. Der Mythus von der Geburt des Helden.

RIKLIN, F. Wunscherfüllung und Symbolik im Märchen.

These three works are published by Franz Deuticke, Vienna.

English translations are ready, or are in preparation.