Bisson frères, 1860, Ascension of Mont-Blanc, Albumen silver print, 11 1/4 x 14 1/8 ins, George Eastman Museum, LL/33157

Bisson frères, 1860, Mont Blanc, Albumen silver print, 23.3 x 39.3 cm, National Gallery of Canada / Musée des beaux-arts du Canada, Purchased 1967, no. 20082, LL/38992

Bisson frères, 1860, Mont Blanc, Albumen silver print, 23.5 x 38.8 cm, National Gallery of Canada / Musée des beaux-arts du Canada, Purchased 1967, no. 20084, LL/38993

Bisson frères, 1860, Mount Maudit, Savoy, Albumen print, from wet collodion negative, 23.20 x 39.20 cm (9 1/8 x 15 3/8 ins) (image), Cleveland Museum of Art, James Parmelee Fund, Accession No.: 1985.94, LL/40840

Bisson frères, 1860s (ca), Mt. Blanc, Albumen print, 15 3/8 x 9 3/8 in, Lee Gallery, Courtesy of Lee Gallery (V1452), LL/12640

Auguste Rosalie Bisson, 1860s, Ascension du Mont-Blanc [Climbing of the Mont-Blanc], Albumen print, Creative Commons - Wikipedia, LL/42581

Auguste Rosalie Bisson, 1871, May (published), Great Crevasses at the Foot of Mont Blanc, Magazine illustration, Google Books, LL/42582

Auguste Rosalie Bisson, 1861, 24 August (published), A Photographic Ascent of Mont Blanc, Magazine page, Google Books, LL/42580

Bisson frères, 1850s (ca), Signature stamp for Bisson frères, Signature stamp, Lee Gallery, LL/13360

Bisson frères, 1850s (ca), Blind stamp for Bisson frères, Blind stamp, Lee Gallery, LL/13361