Jon Callow is an Australian educator who has written extensively about visual literacy and reading. One of my favorite books is IMAGE MATTERS: Visual Texts In The Classroom
. Here is an essay, Talking About Visual Texts With Students
, from IRA's Reading Online which he authored in 2003 Here is a newer video
, NOW literacies--everyday classrooms reading, viewing and creating multimodal texts
, which I found both interesting and relevant.