Muriel Zimmerman, OTR (1916–2014), was a pioneer in the rehabilitation specialty of assistive devices for people with physical disabilities. She is the creator of the universal cuff and the Swedish Arm Support (now called the “Deltoid Aid”) and served as a researcher and supervisor of occupational therapy at Rusk Institute for Rehabilitation Medicine for nearly 50 years. Zimmerman was instrumental in developing many commonly used assistive devices for people with physical disabilities, including writing splints still used today. In her Eleanor Clarke Slagle Lecture in 1960, Zimmerman framed occupational therapy’s potential in functional assessment and creating assistive devices.