There are records of a total of 98 people that died on April 3, 1898. All but three died in the avalanche on the Chilkoot Pass.
Wilbert Garfield Packard of Riverside California, born on this day, September 20, 1881 also died on that terrible day, but he died, along with two other men, of spinal meningitis. His marker in the Dyea Slide Cemetery says he was 16 years and 8 months old, the beloved son of Charles and Emma Packard of Los Angeles.
Packard family site on Genforum.