* The Story of American Furniture: This comprehensive work covers the history of American furniture from the colonial period to the mid-20th century.
* The Dictionary of American Furniture: This book provides detailed information on various styles, makers, and periods of American furniture.
* Early American Design Motifs: This book focuses on the design elements found in early American furniture and decorative arts.
* Early American Wood Carving: This book explores the history and techniques of wood carving in early America.
She also wrote numerous articles for publications like "Antiques" magazine.
In addition to her writing, Geraldine Brain Siks was a renowned expert on American decorative arts and a lecturer at various institutions. She played a significant role in promoting knowledge and appreciation for American furniture and design.