Lucy Stone, Henry Browne Blackwell, Leslie Wheeler (1981). “Loving warriors: selected letters of Lucy Stone and Henry B. Blackwell, 1853 to 1893”, Doubleday
John Ruskin (1854). “On the nature of Gothic architecture: and herein of the true functions of the workman in art. Being the greater part of the 6th chapter of the 2nd vol. of 'Stones of Venice'. [48 p.].”, p.13