Gerhard Richter, 48 Portraits, 1971–98, 48 photographs, black and white, on paper between Perspex and aluminium board, Tate, London. https://dartabase.art/cite/tate/AR00025

Anselm Kiefer, Heroic Symbols, 1969, Photograph, black and white, on paper, Tate, London. https://dartabase.art/cite/tate/AR01172

Johannes Baader, The Author of the Book Fourteen Letters of Christ in His Home (Der Verfasser das Buches Vierzehn Briefe Christi in seinem Heim), 1920, Cut-and-pasted gelatin silver prints, cut-and-pasted printed paper, and ink on book pages, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35877

Anselm Kiefer, Johannisnacht gefallene Bilder. The secret life of plants, 2006, Photograph, black and white, on papers with paint, Tate, London. https://dartabase.art/cite/tate/AR01168

Sigmar Polke, [Untitled], 1975, Gelatin silver print, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36305

Joseph Beuys, Show Your Wound, 1977, 6 photographic negatives, Tate, London. https://dartabase.art/cite/tate/AR00093

Joseph Beuys, Show Your Wound, 1977–84, Photographic negative, Tate, London. https://dartabase.art/cite/tate/AR00094

Anselm Kiefer, Heroic Symbols, 1969, Photograph, black and white, on paper, Tate, London. https://dartabase.art/cite/tate/AR01162

Anselm Kiefer, The moral law within us, the starry heavens above us, 1969–2010, Photograph, black and white, on paper with paint, Tate, London. https://dartabase.art/cite/tate/AR01165

Anselm Kiefer, The starry heavens above us, and the moral law within, 1969–2010, Photograph, black and white, on paper with paint, Tate, London. https://dartabase.art/cite/tate/AR01164

Anselm Kiefer, Falling Stars, 2006, Photograph, black and white, on papers, Tate, London. https://dartabase.art/cite/tate/AR01166

Anselm Kiefer, Heroic Symbols, 1969, Photograph, black and white, on paper, Tate, London. https://dartabase.art/cite/tate/AR01163

Anselm Kiefer, Heroic Symbols, 1969, Photograph, black and white, on paper, Tate, London. https://dartabase.art/cite/tate/AR01173

Anselm Kiefer, Heroic Symbols, 1969, Photograph, black and white, on paper, Tate, London. https://dartabase.art/cite/tate/AR01171

Anselm Kiefer, Heroic Symbols, 1969, Photograph, black and white, on paper, Tate, London. https://dartabase.art/cite/tate/AR01174

Anselm Kiefer, St John’s Lodge, 2007, Photograph, black and white, on paper with paint, Tate, London. https://dartabase.art/cite/tate/AR01170

Anselm Kiefer, [Untitled], 2007, Photograph, black and white, on papers with paint, Tate, London. https://dartabase.art/cite/tate/AR01169

Anselm Kiefer, [Untitled], 2006, Photograph, black and white, on paper with paint, Tate, London. https://dartabase.art/cite/tate/AR01167

Joseph Beuys, [Untitled], 1970, Photograph, gelatine silver print on canvas, Tate, London. https://dartabase.art/cite/tate/AR00600

Breitkopf & Härtel, Photographic postcard of Samuel Coleridge-Taylor, c. 1905, silver bromide and photographic gelatin on photographic paper and card stock; H x W: 5 3/8 x 3 3/8 in. (13.7 x 8.6 cm), National Museum of African American History and Culture, Washington, D.C. https://dartabase.art/cite/smithsonian/ld1-1706868002320-1706868007289-0