Working closely with William Gruber, the inventor of the View-Master, the three-dimensional viewing system that GAF Corporation popularized as a toy in the 1960s, Dr. Bassett created the 25-volume “Stereoscopic Atlas of Human Anatomy” in 1962. It included some 1,500 pairs of slides, along with line drawings that made the details more discernible. The paired slides could be examined with a View-Master, making the chest cavity look cavernous, and making details of structure and tissue stand out unforgettably.