How Did Truman Capote Die? Cause of Death – StyleCaster

The two were rivals until the very end.

Robin Williams Dead: Actor Dies of Suspected Suicide – The Hollywood Reporter

From the Archives: Truman Capote Dies; Wrote 'In Cold Blood' - Los Angeles Times

Philip Seymour Hoffman: Remembering the Late Actor's Best Movies – IndieWire

Truman Capote Is Dead at 59; Novelist of Style and Clarity (New York Times – August 28, 1984)

Infamous Facts About Truman Capote - Factinate

Rio Hackford Dead: 'Treme' Actor, Son of Taylor Hackford Was 51 – The Hollywood Reporter

Frances Sternhagen Dead: Sex and the City, Cheers Actress Was 93 – The Hollywood Reporter

FIRST AUTOPSY RESULTS FAIL TO SHOW FACTORS CAUSING CAPOTE'S DEATH - The New York Times

The Grim Details Of Truman Capote's Death

How Did Truman Capote Die? What to Know About the Writer's Death – Hollywood Life