Sterling, Madge (Fictitious character) — Juvenile fiction — Audiobooks
The Missing Formula Madge Sterling Series, #1
by Mildred A. (Mildred Augustine) Wirt
The Secret of the Sundial Madge Sterling Series, #3
by Mildred A. (Mildred Augustine) Wirt
The Deserted Yacht Madge Sterling Series, #2
by Mildred A. (Mildred Augustine) Wirt