Unidentified photographer / artist, 1878, Title page for Charles Garnier, "Le Nouvel Opera de Paris par Charles Garnier, Volume 1", (Paris: Ducher et Cie, 1878), Title page, Source requested, LL/40951

1875 (published), [Intérieur de l'Agence des travaux], Woodblock illustration, Google Books, LL/40950

Louis-Emile Durandelle, 1867, General View Taken from the Small Staircase; Construction of the Paris Opéra, Albumen print, from wet collodion on glass negative, Victoria and Albert Museum, LL/40945

Louis-Emile Durandelle, 1875 (published), The state of work in 1863 {Etat des travaux en 1863], Woodblock illustration, Google Books, LL/40947

Louis-Emile Durandelle, 1867, View of the East Side; Construction of the Paris Opéra, Albumen print, from wet collodion on glass negative, Victoria and Albert Museum, LL/40946

Louis-Emile Durandelle, 1867, Threshold of the Main Entrance; Construction of the Paris Opéra, Albumen print, from a collodion on glass negative, Victoria and Albert Museum, LL/36341

Louis-Emile Durandelle, 1866 (ca), Opera construction, Paris, Albumen print, The Romantic Agony Book & Print Auctions, LL/60201

Louis-Emile Durandelle, 1866, Le Nouvel Opera de Paris-Sculpteur Autravail, Albumen print, Lee Gallery, LL/13380

Louis-Emile Durandelle, 1875 (published), [Sculpture de la corniche], Woodblock illustration, Google Books, LL/40948

Louis-Emile Durandelle, 1866, Ten workers at the new Paris Opera, Paris, Albumen print, from glass negative, CEROS - Jean-Mathieu Martini / Serge Plantureux, LL/41080

Louis-Emile Durandelle, 1867 (ca), Opera Garnier in construction, Paris, Albumen print, The Romantic Agony Book & Print Auctions, LL/60202

Louis-Emile Durandelle, 1867 (ca), Opera Garnier South Facade nearly achieved, Paris, Albumen print, The Romantic Agony Book & Print Auctions, LL/60203

Louis-Emile Durandelle, 1867 (ca), Pavillon des abonnés, Paris, Albumen print, The Romantic Agony Book & Print Auctions, LL/60204

Louis-Emile Durandelle, 1867 (ca), Avant-corps of the administration, Albumen print, The Romantic Agony Book & Print Auctions, LL/60205

Delmaet & Durandelle, 1868-1869 (ca), Sculptor Amié Millet with "Apollo Crowning Dance and Poetry," Full-scale plaster model for bronze statue mounted on the Paris Opera's Flytower Apex., Albumen print, George Eastman Museum, LL/50383

Louis-Emile Durandelle, 1875-1881, Le Nouvel Opera de Paris. Statues Decoratives, Albumen print, Lee Gallery, LL/3198

Louis-Emile Durandelle, 1875 (published), [Groupe de M. Millet], Woodblock illustration, Google Books, LL/40949

Louis-Emile Durandelle, 1865-1872 (ca), Ornamental Scupture, Albumen print, from wet collodion negative, Cleveland Museum of Art, LL/40860

Louis-Emile Durandelle, 1870 (ca), Modthles de décor en plâtre sur le chantier de construction de l'Opéra de Paris, Tirages sur papier albuminé d'après négatifs sur verre au collodion, Bibliothèque Nationale de France, Département des Estampes et de la Photographie, LL/7088

Louis-Emile Durandelle, 1875, Decorative Details from the Paris Opera House, Albumen print, SFMOMA - San Francisco Museum of Modern Art, LL/40940

Louis-Emile Durandelle, 1867, Modeles en plâtre destinés au décor du théâtre du Vaudeville, Tirage sur papier albuminé d'après négatif sur verre au collodion, Bibliothèque Nationale de France, Département des Estampes et de la Photographie, LL/7065

Louis-Emile Durandelle, 1865-1872, Chapiteau des colonnes du grand foyer, plate 28, [Le Nouvel Opéra de Paris: Sculpture ornementale], Albumen print, from wet collodion-on-glass negative, gold-toned, SFMOMA - San Francisco Museum of Modern Art, LL/40936

Louis-Emile Durandelle, 1865-1872, Chapiteau des colonnes du vestibule, plate 24, [Le Nouvel Opéra de Paris: Sculpture ornementale], Albumen print, from wet collodion-on-glass negative, gold-toned, SFMOMA - San Francisco Museum of Modern Art, LL/40937

Louis-Emile Durandelle, 1865-1872, Chapiteau des colonnes et des pilastres de la salle, plate 30, [Le Nouvel Opéra de Paris: Sculpture ornementale], Albumen print, from wet collodion-on-glass negative, gold-toned, SFMOMA - San Francisco Museum of Modern Art, LL/40938

Louis-Emile Durandelle, 1866 (ca), Lion, Albumen print, The Romantic Agony Book & Print Auctions, LL/60199

Louis-Emile Durandelle, 1875-1881, Le Nouvel Opera de Paris. Sculpture Ornementale, Albumen print, Lee Gallery, LL/13379

Louis-Emile Durandelle, 1879, Sculpture Ornementale, Albumen print, Lee Gallery, LL/3197

Louis-Emile Durandelle, 1865-1872, Masques du vestibule circulaire, plate 36, [Le Nouvel Opéra de Paris: Sculpture ornementale], Albumen print, from wet collodion-on-glass negative, gold-toned, SFMOMA - San Francisco Museum of Modern Art, LL/40943

Louis-Emile Durandelle, 1875, Masked Figures from the Paris Opera House, Albumen print, SFMOMA - San Francisco Museum of Modern Art, LL/40941

Louis-Emile Durandelle, 1865-1872, Masques du vestibule circulaire, plate 35, [Le Nouvel Opéra de Paris: Sculpture ornementale], Albumen print, from wet collodion-on-glass negative, gold-toned, SFMOMA - San Francisco Museum of Modern Art, LL/40942

Louis-Emile Durandelle, 1866 (ca), Masks, Albumen print, The Romantic Agony Book & Print Auctions, LL/60200

Louis-Emile Durandelle, 1879, Bronzes, Albumen print, Lee Gallery, LL/13378

, 1866-1874 (ca), Bronzes, [Le Nouvel Opera de Paris], Albumen print, mounted, Private collection of Peter Spangenberg, LL/43452