O’Laughlin, J. · Boston
O’Loughlin, Terrence · Boston, Los Angeles
O’Mahoney, James · Mitchelstown
Oakes, W. W. · Seattle · worked 1895–1900
Obbo, Marcus (II) · Naples · worked 1803
Oberg, Carl · Stockholm · worked 1814–1821
Oberkirsch, Johann Carl · Mulheim · b. 1800
Obermaier, Alexander · Dresden · b. 1872
Obici, Prospero · Modena · worked 1880
Obrecht, Mathias · Colmar · worked 1819
Oddone, Carlo Giuseppe · Turin · 1866–1935
Odoardi, Antonio (I) · Poggia and Ascoli · worked 1800
Odulf, Gustaf · Stockholm · b. 1899
Oeberg, S A · Stockholm
Oehme, Adam Gottfried · Freiburg
Oelling, Johann Valentin · Crawinkel · 1822–1899
Oerlecke, Heinrich Christian · Tangermunde
Oertel, Louis · Hanover · worked 1866–1926
Oettel, Arthur · Markneukirchen · worked 1878–1925
Oettinger, A. J. · Boston · b. 1860
Ohlsson, Emil · Nykoping · b. 1892
Ohlsson, Emil E. · Stockholm · b. 1896
Ohlsson, John · Emmaboda · b. 1893
Olafson, Oliver G. · Roseau County · b. 1898
Old, William · Falmouth
Oldham, Thomas · Tewkesbury · worked 1810–1825
Oliver, Freeman Adams · Boston · worked 1886–1910
Oliver, James · Reading · worked 1808–1846
Oliveri, Felice · Turin · 1830–1910
Oliveri, Vincenzo · Turin · 1812–1886
Olofsen, A. J. · Gothenburg
Olofsen, Axel · Upsala · worked 1894–1897
Olry, J. · Amiens · worked 1825–1854
Olsen, Lars Jorgen Rudolph · Copenhagen · 1889–1978
Olson, Anton · Varmland · b. 1883
Olsson, J. E. · Hofors · b. 1899
Olstead, George E. · Gainesville · b. 1899
Omond, James · Stromness · 1833–1907
Ongaro, Ignazio · Venice · b. 1741
Onken, Karl · Bremen · worked 1885–1914
Opel, Walter · Erlbach · b. 1897
Opikhtin, A · Saint Petersburg
Orban, Imre · Budapest · b. 1898
Orelli, Josef · Rome
Orestad, Ivar · Bodo · 1883–1963
Orlandi, Orlando · Ascoli Piceno · b. 1875
Orlecke, Heinrich Christian · Tangermunde · worked 1829
Ornati, Giuseppe · Albairate, Milan · 1885–1965
Orselli, Enrico · Ferrara, Pesaro · 1891–1955
