Dr. Crocker was a developmental pediatrician who worked at Children's Hospital Boston for over 60 years. He was the founder and first director of the Developmental Evaluation Clinic at Children's Hospital Boston that grew into the Institute for Community Inclusion. Dr. Crocker was not only a world-renowned physician but also an advocate for children with special health care needs and their families. His leadership was influential in Boston, throughout Massachusetts, and across the country as he helped to pioneer the field of developmental-behavioral pediatrics. His dedication to exceptional children and their families was legendary.