author
1880–1962
A writer of warm, early 20th-century fiction for young readers, she is best remembered for carrying the Pollyanna tradition forward with one of the later “Glad Books.” Her stories often center on spirited girls, family life, and the choices that shape growing up.

by Margaret Piper Chalmers

by Margaret Piper Chalmers
Margaret Piper Chalmers was an American author born in Massachusetts in 1880. Reliable catalog and author-reference sources identify her under several forms of her name, including Margaret R. Piper and Margaret Rebecca Piper, and note that she studied at Smith College.
She wrote popular fiction in the early 1900s, with books including Sylvia's Experiment, Sylvia Arden Decides, and Wild Wings. Project Gutenberg and other library records preserve some of this work, which reflects her interest in youthful independence, friendship, and domestic life.
She is now most often remembered for Pollyanna's Protégée, her contribution to the long-running series of sequel novels inspired by Eleanor H. Porter's Pollyanna. I couldn't confirm a suitable portrait image from the sources I checked, so none is included here.