Sources of Inspiration

Hi all, I am doing a talk in a few weeks on sources of inspiration
for the artist. I think we are all familiar with traditional sources
like natural images, but I am looking for ways to talk about imagery
that is emotionally based. For instance, how to turn political and
social interests into imagery for the fine craftsperson. Of course I
am showing my own slides and talking about my own thought processes
but I am hoping for more. Does anyone know of any good books or
articles I could access on the topic?

Karen