A Prophet of Globalisation: Ignatius Donnelly: Article by Stephen Holt from On Line Opinion. Looks back on Donnelly as a forerunner of the anti-globalization movement.
Appleton's Cyclopedia of American Biography: Ignatius Donnelly: Article from this 1887 biographical compendium, giving information on both Donnelly and his sister.
Biographical Directory of the United States Congress: Donnelly, Ignatius (1831-1901): Key dates of Donnelly's life, with bibliography.
Donnelly, Ignatius: Bibliography, capsule biography, and links.
Ignatius Donnelly: Concise biography, portrait and links.
Ignatius Donnelly: An overview of the Donnelly's changing political affiliations.
Ignatius Donnelly and the End of the World: A fictional presentation of Donnelly returning to modern-day California.