Look at the following site and each of the links: Introduction by Lawrence Rinder, Introduction by Louise Bourgeoise, Multimedia catalogue and each of the 66 drawings, and part of the rap.
Look at the following sketchbooks as records of artistic inquiry:
For your reference as you approach art as inquiry, see what drives these artists:
Josh McElheny http://www.art21.org/node/10746
Leonardo Drew http://www.art21.org/node/10481
For your reference, here are links that address ideas of art as analogy and visual metaphor:
visual metaphors http://grammar.about.com/od/tz/g/vismeterm.htm