Drawing
Forest Nature Trail Guide, page 15 illustrations and layout with preliminary sketches1946
Watts, May Theilgaard
Drawing
Evergreen Nature Trail Guide, page 5 illustrations and layout with preliminary sketches1940s
Watts, May Theilgaard
Drawing
Trees Native To North America But Not To This Region That Can Be Grown HereWatts, May Theilgaard
Photographic image
Education charts: Pacific Northwest