Helen Muir moved to Miami in 1934, where she wrote for the Universal Service Syndicate and reported for newspapers such as the Miami News and the Miami Herald. Muir's devotion to Miami and its history can be gleaned from the numerous books she authored on the city, including Miami, USA and Biltmore: Beacon for Miami. Muir was also a champion for libraries in Florida.
The Helen Muir Papers include correspondence, drafts of writings, research notes, topical files, publications, photographs, clippings, materials relating to Robert Frost, and other items documenting Muir’s life, career, and service.
Selected correspondence has been digitized and is available online, including letters Helen Muir exchanged with Richard Merrick, George Firestone, and Mary Munroe.