Georges (France), 1909, Usine a gaz de La Bastide, Gazometre No. 2 - 1909, Gelatin silver print, Northern Light Gallery, LL/58397

Giorgio Sommer, 1880s, Siracusa Latomie del Paradiso [Italy], Albumen print, Northern Light Gallery, LL/41566

Dr. Mandeville Thum, 1877 (Entered into Congress), [Exterior view of Mammoth Cave], [Views of Mammoth Cave and Vicinity], Stereoview, Northern Light Gallery, LL/41149

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24394

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24402

Frank Bird Masters, 1905, 1 April, Cover of the Saturday Evening Post, Magazine cover, Northern Light Gallery, LL/24374

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24377

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24375

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24389

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24396

Giorgio Sommer, 1880s, Scogli dei Ciclopi [Aci Castello, Sicily, Italy], Albumen print, Northern Light Gallery, LL/41565

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24384

John William Lindt, 1874 (ca), Full portrait of Aboriginal man sitting with fishing net, Albumen print, Northern Light Gallery, LL/58395

Unidentified photographer, n.d., The first American postage stamps, Carte de visite, Northern Light Gallery, LL/41574

Richebourg, 1879 (published), Photoglyph of a quarry with descriptions of layers [CarriÞre de Pierre a Batir], [Carte géologique détaillée de la France, Feuille 48.- Paris - Annexes. Perspectives Photographiques. Pl. II], Photoglyph, Northern Light Gallery, LL/41071

Unidentified photographer, 1870s, Interior of Photographic Van, Group portrait, Tintype, Whole plate, Northern Light Gallery, LL/114434

Louis Igout, 1880s, Artist Study, Albumen print, Northern Light Gallery, LL/58393

Unidentified photographer, 1870s, Interior of Photographic Van, Family Group, Tintype, Whole plate, Northern Light Gallery, LL/114429

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24397

John A. Mather, 1876, Niagara Farm, [Titusville, Pennsylvania], Albumen print, Northern Light Gallery, LL/41152

Giorgio Sommer, 1880s, Untitled [Italy], Albumen print, Northern Light Gallery, LL/41564

Zangaki Brothers, 1890s, La chasse du Crocodil au bord du Nil, Albumen print, Northern Light Gallery, LL/58403

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24383

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24392

Ledru Mauro, 1892, 19 August (or later), Etna - Interno del 1 cratere, pressola montagnuola, 19 Agosto 1892 (italy), Albumen print, Northern Light Gallery, LL/41570

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24399

Frank Bird Masters, n.d., Cyanotype used as the basis for a graphic design for The Saturday Evening Post, Magazine cover and cyanotype, Northern Light Gallery, LL/24372

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24380

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24376

Giorgio Sommer, 1860-1861 (ca), Religious festival [Italy], Albumen print, Northern Light Gallery, LL/41578

Unidentified photographer (France), 1910, Men with horses jumping in Verrie, Gelatin silver print, double-exposure, Northern Light Gallery, LL/58388

Unidentified photographer (New Zealand ?), 1880s, Portrait of a Maori with spear, Albumen print, Northern Light Gallery, LL/58394

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24382

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24386

Unidentified photographer, 1900 (ca), Woman in corset at "beach" with photographer, Gelatin silver print, Northern Light Gallery, LL/49084

Ledru Mauro, 1892, 17 August, 1 p.m., Etna - Eruzione di Lave, Lapillo e Massi - Vista dal M.te Faggio ore 1 p.m. 17 Luglio 1892 [Italy], Albumen print, Northern Light Gallery, LL/41569

H. Béchard, 1870s, Group of Wemas, Albumen print, Northern Light Gallery, LL/58390

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24395

Dr. Mandeville Thum, 1877 (Entered into Congress), [Interior view of Mammoth Cave - Magnesium light], [Views of Mammoth Cave and Vicinity], Stereoview, Northern Light Gallery, LL/41151

Gaetano D'Agata, 1890s, Child portrait, Albumen print, Northern Light Gallery, LL/58389

Richebourg, 1879 (published), Photoglyph of a quarry with descriptions of layers [CarriÞre d'Argile Plastique], [Carte géologique détaillée de la France, Feuille 48.- Paris - Annexes. Perspectives Photographiques. Pl. III], Photoglyph, Northern Light Gallery, LL/41073

H. Béchard, 1870s, Arn en priere, Albumen print, Northern Light Gallery, LL/58392

Unknown (French), 1850s (late), No.5 Roche qui pleure, [Foret de Fontainbleau], Stereoview, Northern Light Gallery, LL/41153

Richebourg, 1879 (published), Photoglyph of a quarry with descriptions of layers [CarriÞre d'Argile Plastique] (edited detail), [Carte géologique détaillée de la France, Feuille 48.- Paris - Annexes. Perspectives Photographiques. Pl. III], Photoglyph, detail, edited, Northern Light Gallery, LL/41074

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24400

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24403

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24398

Giorgio Sommer, 1880s, Pompei Basilica, Albumen print, Northern Light Gallery, LL/58401

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24404

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24388

Unidentified photographer, n.d., [Portrait of a woman jumping], Albumen print, Northern Light Gallery, LL/41573

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24378

Unidentified photographer (French), n.d., X-ray of a baby, X-ray, Northern Light Gallery, LL/41572

Unknown (French), 1914-1918, Aerial reconnaissance photographs, Gelatin silver print, composite, Northern Light Gallery, LL/41576

Émile Béchard, 1870s, Column with portable darkroom [Egypt], Albumen print, detail, Northern Light Gallery, LL/58400

Louis Igout, 1880s, Detail studies of a child, Albumen print, Northern Light Gallery, LL/58396

Dr. Mandeville Thum, 1877 (Entered into Congress), [Interior view of Mammoth Cave - Magnesium light], [Views of Mammoth Cave and Vicinity], Stereoview, Northern Light Gallery, LL/41150

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24391

H. Béchard, 1870s, Fontaine Publique [Cairo], Albumen print, Northern Light Gallery, LL/58391

Frank Bird Masters, 1906, 3 March, Cover of the Saturday Evening Post, Magazine cover, Northern Light Gallery, LL/24373

Sebah & Joaillier, 1880s, Citerne des Mille & Une Colonnes, Albumen print, Northern Light Gallery, LL/58402

Unknown (French), n.d., X-ray of an uncertain species, X-ray, Northern Light Gallery, LL/41575

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24390

Unidentified photographer (Italian), 1892, [Lava fields, Italy], Albumen print, Northern Light Gallery, LL/41567

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24381

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24379

Sze Yuen Ming, 1880s, Chinese transportation, Albumen print, Northern Light Gallery, LL/49083

Unidentified photographer, 1960s, Free Love Club, Gelatin silver print, retouched, Northern Light Gallery, LL/41577

Unidentified photographer (French), 1945, 27 November, 11/27/1945 - Stabbed by wife during an argument and a scuffle, [French morgue], Gelatin silver print, Northern Light Gallery, LL/41571

Émile Béchard, 1870s, Column with portable darkroom [Egypt], Albumen print, Northern Light Gallery, LL/58399

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24387

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24401

Unknown (French), 1850s (late), No.5 Roche qui pleure, [Foret de Fontainbleau], Stereoview, back, Northern Light Gallery, LL/41154

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24385

Giorgio Sommer, 1860-1861 (ca), Embossed stamp for Giorgio Sommer - Largo Vittoria - Napoli, Studio stamp, Northern Light Gallery, LL/41579

Frank Bird Masters, n.d., Untitled, [Railway studies], Cyanotype, Northern Light Gallery, LL/24393

Richebourg, 1879 (published), Photoglyph of a quarry with descriptions of layers [CarriÞre de Pierre a Batir] (edited detail), [Carte géologique détaillée de la France, Feuille 48.- Paris - Annexes. Perspectives Photographiques. Pl. II], Photoglyph, detail, edited, Northern Light Gallery, LL/41072

Ledru Mauro, 1892, 19 August (or later), Etna - Eruzione 1892 - Nuovi monti. 19. Agusto [Italy], Albumen print, Northern Light Gallery, LL/41568

Wm. I. Rood, 1890s, Piece of machinery, Cabinet card, Northern Light Gallery, LL/58398