H.B. Gilmour, a veteran publishing professional and bestselling author, died Sunday, June 21, at her home in Cornwallville, N.Y. She was 69. Gilmour’s first publishing job was at E.P. Dutton, and in 1964 she joined Bantam Books as an assistant to the publisher in Oscar Dystel’s office. She joined Scholastic in 1992 before leaving in 1995 to write.

As an author, Gilmour wrote or collaborated on more than 50 books for adults and young readers. She may be best known for her novelizations of the movies Saturday Night Fever and Pretty in Pink. More recently, she collaborated with Randi Reisfeld in writing the T*Witches series for Scholastic, which spawned two hit movies on the Disney Channel.