The Jo Vellacott fonds contains extensive documentation regarding Vellacott’s work as a historian of women, feminism, pacifism, and Bertrand Russell, both as an academic at several Canadian universities, as well as her work as an independent scholar. The fonds contains a significant amount of correspondence, both personal and professional, which spans almost the entirety of Vellacott’s life. Fonds also contains materials relating to Vellacott’s education, particularly her PhD work at McMaster University, and much of her personal and scholarly writings. It also contains materials relating to Vellacott’s Quakerism and involvement with the Thousand Island Monthly Meetings, as well as photographs of Vellacott and paintings and sketches she made.