- "Speaking the Plane Truth" by Arthur C. Gibson
- "American Sycamore Trees: History and Appearance of One of the Largest Eastern Hardwood Species" by Renie Burghardt
If you’d like to see my sketchbook paintings of sycamore leaves, please visit my Flickr site and start here. These are a series of leaf studies using different primary triads of Daniel Smith watercolors. The differences are subtle, but I learned a lot!