100+ mentions are found for request
different sources from the year —1902 (9) 1906 (3) 1917—1927 (9) 1938 (30) 1942 (46) 2007 (10)

Milan Otto

Source: 'Yearbook and Directory of Literary Society of St. Jerome 1906 , year 1906.

Oto Kratković

Source: 'Yearbook and Directory of Literary Society of St. Jerome 1906 , year 1906.

Oto Kratković

Source: 'List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia , year 1917.

Oto Kaiser

Source: 'List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia , year 1917.

Oto Jungwirth

Source: 'List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia , year 1917.

Oto Pavlić

Source: 'List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia , year 1917.

Oto Mešler

Source: 'List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia , year 1917.

Jan Otto

Source: 'List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia , year 1917.

Oto Schick

Source: 'List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia , year 1917.

Oto Bošnjak

Source: 'List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia , year 1917.