“I once spent three and a half months flying around the world. I was surprised that there were so many desert areas with large riverbeds running through them. I made many drawings about one and a half inches square of the rivers seen from the air. At home I made larger charcoal drawings. The color used for the paintings had little to do with what I had seen – the color grew as I painted.” (https://www.okeeffemuseum.org/around-the-world-from-above/)