Chicago:
Holland Thompson, "Prefatory Note," Age of Invention : A Chronicle of Mechanical Conquest, ed. Conway, Moncure Daniel, 1832-1907 in Age of Invention : A Chronicle of Mechanical Conquest Original Sources, accessed July 11, 2025, http://www.originalsources.com/Document.aspx?DocID=RW4T1X7P1VDKI88.
MLA:
Thompson, Holland. "Prefatory Note." Age of Invention : A Chronicle of Mechanical Conquest, edited by Conway, Moncure Daniel, 1832-1907, in Age of Invention : A Chronicle of Mechanical Conquest, Original Sources. 11 Jul. 2025. http://www.originalsources.com/Document.aspx?DocID=RW4T1X7P1VDKI88.
Harvard:
Thompson, H, 'Prefatory Note' in Age of Invention : A Chronicle of Mechanical Conquest, ed. . cited in , Age of Invention : A Chronicle of Mechanical Conquest. Original Sources, retrieved 11 July 2025, from http://www.originalsources.com/Document.aspx?DocID=RW4T1X7P1VDKI88.