On Thursday, March 25, author Beverly Cleary died in her home in Carmel Valley, Calif., her publisher HarpersCollins said in a statement. She was 104. 

“We are saddened by the passing of Beverly Cleary, one of the most beloved children’s authors of all time. Looking back, she’d often say, ‘I’ve had a lucky life,’ and generations of children count themselves lucky too,” said Suzanne Murphy, president and publisher of HarperCollins Children’s Books, in a press release. “Her timeless books are an affirmation of her everlasting connection to the pleasures, challenges, and triumphs that are part of every childhood.”

Cleary, who won the Laura Ingalls Wilder Award from the American Library Association for “substantial and lasting contributions to children’s literature” in 1975, was the author of the Henry Higgins series, about a young boy growing up in Portland, Oregon. Between 1950 and 1964, Cleary published six books in the series, with the final novel, Ribsy, taking place from the perspective of Henry’s family dog.

However, it was the Henry Higgins‘ spin-off series, the Ramona novels, for which Clearly would become best known. In the series, Cleary chronicled the life of Ramona Quimby, a middle class girl and Henry’s neighbor who experienced a wide range of growing pains between pre-school and kindergarten. The series, which has eight books total, began in 1955 with Beezus and Ramona and ran through 1999 with Ramona’s World.