 In 1917, he was one of several individuals who believed in the healing properties of engaging activity and was instrumental in founding the National Society for the Promotion of Occupational Therapy that has since been renamed the American Occupational Therapy Association.His 1918 article "The Principles of Occupational Therapy" appeared in "Public Health" and laid the foundation for the textbook he published in 1919 entitled "Reconstruction Therapy".In 1928, he published another textbook "Prescribing Occupational Therapy".