* Prairie Flowers: This book is considered her most famous work. It is a comprehensive guide to the wild flowers of the Canadian prairies, featuring beautiful illustrations and detailed descriptions.
* Indian Horses of the Plains: This book explores the role of horses in the lives of Indigenous peoples of the North American prairies. It delves into their history, uses, and cultural significance.
* The Faraway Trail: This book recounts her experiences exploring the Canadian prairies and the people she met along the way. It provides insights into the lives of early settlers and the challenges they faced.
* Let the Wind Blow Free: This book is a memoir reflecting on her life and her experiences in the Canadian prairies.
* The Wind Whispers: This is another book exploring the natural history of the Canadian prairies, focusing on the winds and their influence on the landscape.
In addition to these books, Stanwell-Fletcher also wrote numerous articles and essays for various publications. Her writing is known for its poetic descriptions and insightful observations of the natural world. She was a passionate advocate for the conservation of the Canadian prairies and its unique ecosystem.