Harwood used a range of pseudonyms in her early work, such as Walter Lehmann, W.W. Hagendoor (an anagram of her name), Francis Geyer, Timothy (TF) Kline, Miriam Stone, and Alan Carvosso.
She corresponded over the years with several poet friends, including Vincent Buckley, A. D. Hope, Vivian Smith, and Norman Talbot, as well as family and other friends such as Tony Riddell, and two volumes of her letters have been published.