R. K. (Ruby Kathleen) Polkinghorne

Ruby Kathleen Polkinghorne, sometimes listed as R. K. Polkinghorne, was a writer whose books centered on practical education and creative work. Confirmed titles linked to her include Toy-Making in School and Home—written with Mabel Irene Rutherford Polkinghorne—as well as What the World Wears, Weaving and Other Pleasant Occupations, and Lands of the Commonwealth.

Her catalog suggests a strong interest in teaching through making. Crafts, needlework, weaving, and school activities appear repeatedly in her books, alongside educational writing such as Teaching Reading in the Junior School with special attention to backward readers.

Reliable biographical details about her life beyond her published work are hard to confirm from the sources found here, so this overview stays close to what can be verified: she was a prolific educational and practical author whose books were designed to be useful, accessible, and engaging for learners and teachers.