A frugal Vermont man who held coats together with safety pins has posthumously donated $6 million to his local library and hospital.

Ronald Read, a former janitor and gas station attendant, had a talent for picking stocks, the New York Post reported.

Read, who died at 92, did not make his fortune known during his lifetime.

Read more below from the New York Post:

The investments made by Ronald Read, a former gas station employee and janitor who died last June at age 92, “grew substantially” over the years, said his attorney, Laurie Rowell.

Read, who was known for his flannel jacket and baseball cap, gave no hint of the size of his fortune.

“He was unbelievably frugal,” Rowell said Wednesday. When Read visited her office, “sometimes he parked so far away so he wouldn’t have to pay the meter.”

The bequest of $4.8 million to the Brattleboro Memorial Hospital and $1.2 million to the town’s Brooks Memorial Library were the largest each institution has ever received. Read also made a number of smaller bequests.