Margaret "Maggie" Hilbiber Baylis (1912–1997) was an American graphic designer, illustrator, and author of gardening books.
Margaret Hilbiber was born in Tacoma, Washington in 1912. At age 16 she was accepted as an architecture student at the University of Pennsylvania, one of three women in her cohort. Two years into her studies with the onset of the Great Depression, Maggie had to drop out of the program to support her family by working as an assistant advertising manager at a department store in Tacoma.
During World War II, Baylis left for Hawaii where she worked as a civilian doing graphic design work for Moore Dry Dock Company In 1941 she moved to San Francisco two weeks before the attack on Pearl Harbor and began work as an assistant advertising manager at Sunset magazine, where she worked until 1951. While working for Sunset, she opened her own graphic design studio and hired Douglas Baylis, a landscape architect whom she later married, as her business partner. The Baylis' worked together for 20 years. The Baylis’s contributed to Western Landscape Design, House & Garden, Better Homes & Gardens, House Beautiful, and Sunset. Maggie Baylis was the main force behind the 1948 San Francisco Museum of Art Landscape Design catalog, credited with both the layout and design. When architect Gordon Drake was killed in a skiing accident, Maggie designed and her husband wrote a book entitled California Houses of Gordon Drake. In 1971, she turned her attention to writing and illustrating a dozen books, the most well-known being House Plants for the Purple Thumb.
Throughout her life Baylis was involved in community affairs. She was on the board of trustees for the Strybing Arboretum, and involved with San Francisco Beautiful, and Telegraph Hill Dwellers. In the about the author section of her book House Plants for the Purple Thumb, Baylis described herself as a "draftsmen, delineator, bread-baker, carpenter, and house plant tender." Baylis had liver cancer and died on December 10, 1997.
Douglas and Maggie Baylis collection
Her works were exhibited by the Sonoma League for Historic Preservation in March 2011.
Obniski, Monica and Darrin Alfred. Serious play : design in midcentury America. New Haven: Yale University Press, 2018.
- Pimsleur, J.L. "Obituary-Maggie Baylis." San Francisco Chronicle. (December 24, 1997).
- Maggie Baylis, interviewed by Suzanne B. Mess, Doug Baylis, The Church Office and Garden Publication, Regional Oral History Office University of California, The Bancroft Library Berkeley, California, 1978
- Maggie Baylis, House Plants for the Purple Thumb (San Francisco: 101 Productions), 192.
- "Homage to Maggie Baylis (1912 - 1997)" (PDF). Sonoma League For Historic Preservation Newsletter: 3. February 2011.
-  from the finding aid for the Douglas and Maggie Baylis collection, 1938-1998 (bulk 1943–1971)