How many sisters did John Steinbeck have, and what were their first names?

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scarletpimpernel eNotes educator| Certified Educator

John Steinbeck was the only son in a family of three sisters.  He was the third child or John II and Olive Steinbeck.   His sisters' names are: Elizabeth Steinbeck Ainsworth, Esther Steinbeck Rodgers, and Mary Steinbeck Dekker, all of whom are deceased.