Fred Bass, owner of New York City’s iconic Strand Book Store, has died.

He passed away Wednesday morning at his home.

Police are still investigating the cause of death.

At the age of 13, Fred began to work alongside his father at the bookstore.

For over 30 years, Bass managed the store with his daughter and current owner, Nancy Bass Wyden.

The store boasted having over "18 miles of books."

Fred Bass was 89 years old.

Bass' daughter paid tribute to her father saying, "He spent all of his time behind his buying desk, eager to see what treasures would come across it. He felt working with books was the best job in the world."