File:John Martin 002.jpg - Wikipedia

File:Martin John III Sobieski (detail) 02.jpg - Wikimedia Commons

File:Waldseemuller map 2.jpg - Wikipedia

File:John Martin - Design for a London sewer, 1845 (BL Maps 3485.(7.)).jpg - Wikimedia Commons

File:Great Sea-Dragons.jpg - Wikipedia

File:John Martin and Mission Ranch.jpg - Wikipedia

File:John Martin - The Angels Guarding Paradise at Night.jpg - Wikimedia Commons

File:John Martin - The Walls of Jericho - B1975.4.640 - Yale Center for British Art.jpg - Wikimedia Commons

File:John Jacob Mickley family monument, St. John's Union Cemetery, Mickleys, PA.jpg - Wikipedia

File:John Martin - The country of the Iguanodon - Google Art Project.jpg - Wikipedia