Gunther Kress’ work has been important for my own thinking and understanding of the relationship between word and image. I could not resist nicking this image from Knowledgerepresentation where you can find two of his lectures and a paper on Reading Images: Multimodality, Representation and New Media
Some favourite readings:
Kress, Gunther, Van Leeuwen, Theo (1996): Reading Images. The Grammar of Visual Design. London, New York: Routledge.
Kress, Gunther (1997): Before Writing. Rethinking the Paths to Literacy. London/New York.
Kress, G.R. and Van Leeuwen, T. (2002). Multimodal Discourse: the modes and media of contemporary communication. London: Edward Arnold
Kress, Gunther (2003): Literacy in the New Media Age. London: RoutledgeFalmer