Biblioteka
Instytutu
Józefa Piłsudskiego w Ameryce 
Biblioteka
imienia
Alfreda Jurzykowskiego Polskiego Instytutu Naukowego w
Ameryce
Biblioteka Marjanczyków Polskiej Fundacji Kulturalnej 
Urbański, Edmund Stefan (1909- )
Dr. Józef Leonard and his cultural-political activities in Spain between 1868 and 1881 / by Edmund Stephen Urbański. - New York : The Polish Inst. of Arts and Sciences in America, 1967. - 14 s. ; 23 cm.
Repr.: The Polish Review, vol. 12, no. 3, Summer 1967.
Dr. Józef Leonard and his cultural-political activities in Spain between 1868 and 1881 / by Edmund Stephen Urbański. - New York : The Polish Inst. of Arts and Sciences in America, 1967. - 14 s. ; 23 cm.
Repr.: The Polish Review, vol. 12, no. 3, Summer 1967.