Born in 1935, Dr. Daniel L. Creson was in in private practice with North Texas Psychiatry and Psychotherapy in Denton, Texas. He was Professor Emeritus at The University of Texas Health Science Center - Houston in the Department of Psychiatry and Behavioral Sciences. He served there as Clinical Professor and Director of Continuing Education before his retirement in 2003. He was Board Certified by the American Board of Psychiatry and Neurology in 1971.

Dr. Creson received his medical degree from The University of Texas Medical Branch-Galveston, Texas in 1962. He earned an MA in Behavioral Science and a PhD in Anthropology from Rice University, Houston Texas. He holds academic appointments at Galveston Family Institute, The University of Texas Medical Branch - Galveston and The University of Texas Health Science Center - Houston. Among his past positions, he served as Adjunct Associate Professor at Tulane University, Executive Director of Gulf Coast Regional Mental Health-Mental Retardation Center, and Medical Director of Mental Health Mental Retardation Authority of Harris County.

Dr. Creson was active on several boards of mental health mental retardation organizations in Galveston and Houston as well as several committees for the Texas Society of Psychiatric Physicians. He has been a member of the Crisis Response Consortium of Harris County and Burn Disaster Response Team for Shriners Burn Institute. In addition to his past work in crisis situations throughout the world, he continues to serve as consultant to Humanitarian Aid and Medical Development (HMD) and Christian Children's Fund. Dr. Creson was instrumental in the development of an historical archives project, which seeks to document the history of mental health services in Texas. He personally obtained oral histories from many psychiatrists and other professionals throughout Texas.

Dr. Creson died November 30, 2015, in Sanger, Texas.

Irvin Alan Kraft was born in Huntington, West Virginia, on November 20, 1921. He attended from Johns Hopkins University but interrupted his education to join the army. He qualified for the Army Specialized Training Program and volunteered to become a doctor, which meant completing two years of pre-medical courses in nine months. His unit studied at NYU School of Medicine and he completed his residency in psychiatry at Kingsbridge VA Hospital in New York City. After a second tour of duty in the Air Force, he received a fellowship in child psychiatry at Tulane University in 1954. He moved to Houston in 1957 to initiate a child psychiatry program at Baylor College of Medicine. He later joined the UT School of Public Health as a clinical professor of mental health.
Kraft was instrumental in founding the Texas Institute of Child Psychiatry in 1963. He worked with Denton Cooley in 1968 as a psychiatric consultant to the heart transplant team. He died May 30, 2010, and is buried at Emanu El Memorial Park.

Alan Bruce Cooper was born in New York, New York on August 19, 1928. He earned a BS in 1949 and a Master’s in immunogenetics in 1951 from Wesleyan University, followed by an MD in 1955 from New York Medical School. After serving as chief of pathology at Harvard University, he joined the Air Force. After his discharge as a major, he taught at Baylor College of Medicine and New Orleans Psychoanalytic Institute in psychiatry and psychoanalysis. He was also in private practice in Houston between 1968 and 1985. In 1986, Dr. Cooper was appointed medical director of the University of Texas Adult Ambulatory Psychiatric Services and was later a professor in the Department of Psychiatry and Behavioral Sciences. He died in Houston on December 29, 2002, of lung cancer.