Sources
The California Digital Newspaper Collection
Herbert Hoover and the Organization of American Relief Effort in Poland (1919-1923)The founding of the Grey Samaritans and war relief work in Poland .
History of Langham Court Theatre and the Victoria Operatic Society
Laura De Turczynowicz Fonds, Brock University Archives, RG 89
Library of Congress, Chronicling America - Historic American Newspapers
Teresa Vanderburgh Musical Scrapbooks - Special Collections, St. Catharines Public Library