Article Nöthlich, Rosemarie; Wetzel, Nadine; Hoßfeld, Uwe; Olsson, Lennart; (2006)
“Ich acquirirte das Schwein sofort, ließ nach dem Niederstechen die Pfoten abhacken u. schickte dieselben an Darwin”---Der Briefwechsel von Otto Zacharias mit Ernst Haeckel (1874--1898) (/isis/citation/CBB000933670/)

Book Hoßfeld, Uwe; Breidbach, Olaf; (2005)
Haeckel-Korrespondenz: Ubersicht über den Briefbestand des Ernst-Haeckel-Archivs (/isis/citation/CBB000700738/)

Book Young, Christian C.; Largent, Mark A.; (2007)
Evolution and Creationism: A Documentary and Reference Guide (/isis/citation/CBB000700832/)

Article Richards, Robert J.; (2005)
Ernst Haeckel and the Struggles over Evolution and Religion (/isis/citation/CBB000933659/)

Chapter Morton, Marsha; (2009)
From Monera to Man: Ernst Haeckel, Darwinismus, and Nineteenth-Century German Art (/isis/citation/CBB001035101/)

Article Kleeberg, Bernhard; (2007)
God-Nature Progressing: Natural Theology in German Monism (/isis/citation/CBB000850279/)

Book Ernst Haeckel; Valeria Maggiore; (2024)
Storia della creazione naturale. Conferenze scientifico-popolari sulla teoria dell’evoluzione in generale e su quella di Darwin, Goethe e Lamarck in particolare (/isis/citation/CBB568386188/)

Book Schleiden, Matthias Jacob; Breidbach, Olaf; (2004)
Matthias Jacob Schleiden (1804-1881): Schriften und Vorlesungen zur Anthropologie (/isis/citation/CBB000610392/)

Book Zigman, Peter; (2000)
Einblicke in eine sterbende Ära: Das Ende des Mythos der guten alten Zeiten (/isis/citation/CBB000102643/)

Book Gliboff, Sander; (2008)
H. G. Bronn, Ernst Haeckel, and the Origins of German Darwinism: A Study in Translation and Transformation (/isis/citation/CBB000850350/)

Book Roman Göbel; Gerhard Müller; Claudia Taszus; (2019)
Ernst Haeckel: Ausgewählte Briefwechsel, Band 2: Familienkorrespondenz, August 1854 bis März 1857 [Selected Correspondence, Volume 2: Family Correspondence, Augst 1854 to March 1857] (/isis/citation/CBB349269740/)

Article Hopwood, Nick; (2015)
The Cult of Amphioxus in German Darwinism; or, Our Gelatinous Ancestors in Naples' Blue and Balmy Bay (/isis/citation/CBB001510262/)

Book Kleeberg, Bernhard; (2005)
Theophysis: Ernst Haeckels Philosophie des Naturganzen (/isis/citation/CBB000830695/)

Thesis Gliboff, Sander Joel; (2001)
The pebble and the planet: Paul Kammerer, Ernst Haeckel, and the meaning of Darwinism (/isis/citation/CBB001562605/)

Article van Wyhe, John; Basman, Antranig; (2007)
The Launch and Reception of Darwin Online (/isis/citation/CBB000760051/)

Chapter Richards, Robert J.; (2009)
That Darwin and Haeckel Were Complicit in Nazi Biology (/isis/citation/CBB001032214/)

Book Rosemarie Nöthlich, Christoph Kockerbeck; (2006)
Ernst Haeckel -- Wilhelm Bölsche: Kommentarband zum Briefwechsel 1887--1919 (/isis/citation/CBB000610120/)

Book Ruth Barton; Jeremiah Rankin; Michael S. Reidy; (2017)
The Correspondence of John Tyndall, Volume 3: The Correspondence, January 1850-December 1852 (/isis/citation/CBB074896670/)

Book Nöthlich, Rosemarie; (2003)
Ernst Haeckel -- Wilhelm Bölsche: Briefwechsel 1887-1919 (/isis/citation/CBB000500135/)

Book Gregorio, Mario A. di; (2005)
From Here to Eternity: Ernst Haeckel and Scientific Faith (/isis/citation/CBB000671261/)