Coba jelasin Catatan dari Helena Modjeska dong

Guide to the Ellen K. Lee Collection on Helena Modjeska and Orange County.  Special Collections and Archives, The UC Irvine Libraries, Irvine, California.

Guide to the Collection of Helena Modjeska Theater Memorabilia.  Special Collections and Archives, The UC Irvine Libraries, Irvine, California.

Guide to the Helena Modjeska Collection.  Special Collections and Archives, The UC Irvine Libraries, Irvine, California.

Madam Modjeska scrapbooks, 1877–1898 , held by the Billy Rose Theatre Division, New York Public Library for the Performing Arts

Heroines of the Modern Stage  p. 52 by Forrest Izard c. 1915