In 1973, Mumford won a Primetime Emmy Award for his writing in The Electric Company.[1] In 1978, a Sesame Street character was named after him (Dr. Thad of "Dr. Thad and the Medications", who sang "The Ten Commandments of Health"). Mumford also performed the voice for the character.
Mumford also gained some renown working as a batboy for the New York Yankees.[2]
Alleged connection to Basquiat Museum scandal
Unpaid storage units owned by Mumford that were auctioned off in May 2012 were said to contain an inscribed Emmy award, Yankees memorabilia, and multiple works on cardboard supposedly made by Jean-Michel Basquiat. The works changed hands several times and were subsequently displayed at the Orlando Museum of Art before being confiscated by the FBI.[3]
While individuals implicated in the scandal have claimed various connections to Mumford, he signed a document in the presence of an FBI special agent stating, "At no time in the 1980s or at any other time did I meet with Jean-Michel Basquiat, and at no time did I acquire or purchase any paintings by him. Furthermore, at no time did I store any Basquiat painting at Ortiz Brothers Moving and Storage in Los Angeles or anywhere else."[3]
Death
Mumford died after a long illness on September 6, 2018, aged 67, at his father's home in Silver Spring, Maryland.[4] His father, Thaddeus Mumford Sr., died of cancer a few weeks earlier on August 3, 2018.[5]