author
1886–1972
A versatile American writer, she moved between fiction, drama, song lyrics, and biography. Her surviving published work shows a lively range, from the novel Five Nights at the Five Pines to a co-written life of astronomer John Alfred Brashear.

by Harriet A. (Harriet Avery) Gaul
Harriet A. Gaul, also listed in library records as Harriet Avery Gaul, was an American author born in 1886 and deceased in 1972. Catalog and public-domain sources connect her with several kinds of writing rather than just one lane, which gives her work an especially curious appeal for modern readers.
Her best-known fiction title appears to be Five Nights at the Five Pines, and other records link her to dramatic and musical writing, including Alice in Wonderland: a musical play in three acts. She also co-wrote John Alfred Brashear, Scientist and Humanitarian, 1840–1920 with Ruby Eiseman, showing a turn toward biography as well as imaginative literature.
Some sources also associate her with composer Harvey Bartlett Gaul, but the details were not consistent enough across the material I found to state more with confidence. What does come through clearly is a writer with broad interests and an ability to work across popular storytelling, theater, and historical biography.