Just a quick one tonight. Here's a link I found to a gallery that specializes in Oriental Sumi-e Ink Painting. Notan is then a major emphasis in the work represented there. It is different than O'Keefe - it's all in black ink (done with a brush) and the subject matter varies. It has been a fun perusal for me this evening. I think seeing all those different images and artistic personalities shows me more about notan.
Oh, one guess where the gallery is...
Santa Fe, NM.