Bank of the West has set up an account for donations that will help with medical bills and funeral costs for the Anderson family from Patterson.
James Donald Anderson, 49; Emma Gabriela Anderson, 44; and their youngest son, Andrew David Anderson, 15, died in a vehicle crash Aug. 24.
The Andersons' other son, James "Jimmy" Anderson, 24, was the fourth family member in their sport utility vehicle.
He is paralyzed from the chest down and is expected to eventually regain movement in his arms, his aunt said.
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Bank officials said anyone can make a donation to the Anderson Family Memorial Fund at any Bank of the West branch.