The article is recognized as a milestone in the history of psychology. In 1963, Bailey designed and implemented a program to improve techniques for working with profoundly mentally retarded individuals at a human development center in Alexandria, Louisiana. She emphasized the value of positive reinforcement, and taught ward attendants humane practices that became the standard for institutions of this kind. The 1965 training manual Teaching the Mentally Retarded, which she and others prepared, remained in use for decades. On June 16, 1965, Breland died of a heart attack. In their 1966 textbook, Bailey described him as the "dreamer" and herself as the "engineer". She continued writing, researching, and training animals. Work with Bob Bailey In 1976, she married Robert (Bob) E. Bailey. He had been the first Director of Training in the Navy's Marine Mammal Program, then became ABE's General Manager. The two of them had founded the facility "Animal Wonderland" in 1972. Among their many activities, the Baileys worked with the Canine Companions for Independence nonprofit organization which trained dogs to assist disabled individuals. Together, the Baileys trained animals from over 140 species. Bailey's graduate studies had stopped when she and Breland left to found ABE. She returned to graduate school and earned her Ph.D. in psychology at the University of Arkansas in 1978. She then served as a professor of psychology at Henderson State University from 1981 until her retirement in 1998. During these years, the Baileys produced educational films on topics such as the history of behaviorism. Their film work included The History of Behavioral Analysis Biographies, the ABE documentary Patient Like the Chipmunks, and An Apple for the Student: How Behavioral Psychology Can Change the American Classroom. Bailey continued writing about the "misbehavior" of animals during operant conditioning for publications such as American Psychologist, the official journal of the American Psychological Association (APA). The Baileys were chief among the behaviorists who began using the Internet for instruction, problem solving, and promotion of their science. In 1996, the Baileys began the Bailey & Bailey Operant Conditioning Workshops, which provided training to animal trainers, psychologists, students, and many others from throughout the world. The program of study involved four increasingly advanced levels of the "physically, mentally, and emotionally demanding" workshops. In 1998, the University of Arkansas inducted Bailey into the university's Fulbright College Alumni Academy as one of their first Distinguished Alumni Award recipients. On September 25, 2001,