Greenhalgh, Mary Ann, [Reminiscences], in Elvera Campbell Green, comp. and ed., Tartan, Sage and History: The Story of Robert William Rowe Campbell and Sarah Newton [1981], 53-54
- Greenhalgh, Mary Ann, [Reminiscences], in Elvera Campbell Green, comp. and ed., Tartan, Sage and History: The Story of Robert William Rowe Campbell and Sarah Newton [1981], 53-54. Transcript for Greenhalgh, Mary Ann, [Reminiscences], in Elvera Campbell Green, comp. and ed., Tartan, Sage and History: The Story of Robert William Rowe Campbell and Sarah Newton [1981], 53-54