Thomas F. Simon, who served more than 39 years as clerk of the Missouri Supreme Court before retiring on June 1, 2011, died Sunday at Capital Region Medical Center.
He was 71.
A funeral mass will be at 11 a.m. Saturday at St. Peter Catholic Church, with burial in Riverview Cemetery.
Dulle-Trimble Funeral Home is in charge of the arrangements, and other details will be announced later.
"We believe he was the longest serving high-court clerk in the country at the time of his retirement," Chief Justice Richard Teitelman said in a news release Monday afternoon, "but his legacy went far beyond just his duties here.