Author of the book Iwamasa Flies, the Introduction by Dave Whitlock; contributor to the book Stoneflies by Swisher and Richards and contributor to the book Fly Tyer's Almanac by Dave Whitlock. Ken is the originator of many fly patterns and has published many articles in Fly Fisherman magazine, Fly Tyer Magazine in the US and published articles in Tight Loops magazine and Fly Fisherman Magazine Japan Edition, and La Fourmi, published in France. He appears in several chapters, in books by John Geriach.
Ken Iwamasa was co-curator of the Confluence: International trout fly exhibition, former executive director and writer for Fly Fisherman magazine Japan Edition, former Orvis fly fishing school instructor and guide, and he has given slide show presentations to TU chapters throughout the US. He has fly fished in many of the waters of the world and is a life-time member of TU. He is a life time member of Trout Unlimited and is currently a professor of art at the University of Colorado, in Boulder.