Here is not one but two stories about authors who had the habit of making their literary contributions comfortably ensconced in bookstore windows.
One was Harlan Ellison, award winning science fiction writer who “amid distractions, gaping pedestrians, and breaks to entertain autograph seekers, … churned out stories in bookstore windows overlooking Washington, London, Boston, and New York. Good ones, too. The five days he spent in the window of A Change of Hobbit in Santa Monica in 1977 resulted in work that garnered three awards…”
The other was Georgelle Hirliman, an astrologer, actress and author who billed herself as the Writer in the Window. Although Ms. Hirliman had a varied career working on the stage and in radio, she was “best known for her “Writer in the Window” persona. Ms. Hirliman became “a regular sight at such Santa Fe businesses as Downtown Subscription and The Zia Diner, and she took the project to other cities including Albuquerque and New York City” where she wrote in the storefront at the B. Dalton bookstore.
P.S. Her dad was low-budget film producer George A. Hirliman, whose main claim to fame was the 1936 cult classic Reefer Madness.