D'Amato, Gaetano (April 1908). "The "Black Hand" Myth". The North American Review. Vol. 187. University of Northern Iowa. pp. 543–549. JSTOR25106116.
newspapers.com
"Alleged Blackmailers Taken by Boston Police". The North Adams Transcript. North Adams, MA. North Adams Transcript. 24 February 1908. p. 1. Archived from the original on 7 December 2021. Retrieved 7 December 2021 – via Newspapers.com.
"Alleged Blackmailers". Fitchburg Sentinel. Fitchburg, MA. Fitchburg Sentinel. 24 February 1908. p. 9. Archived from the original on 7 December 2021. Retrieved 7 December 2021 – via Newspapers.com.
"Blackhand Plot Against Piscopo". The Boston Globe. Boston, MA. Boston Globe. 24 February 1908. p. 2. Archived from the original on 7 December 2021. Retrieved 7 December 2021 – via Newspapers.com.
"Alleged Blackmailers Taken by Boston Police". The North Adams Transcript. North Adams, MA. North Adams Transcript. 24 February 1908. p. 1. Archived from the original on 7 December 2021. Retrieved 7 December 2021 – via Newspapers.com.
"Alleged Blackmailers". Fitchburg Sentinel. Fitchburg, MA. Fitchburg Sentinel. 24 February 1908. p. 9. Archived from the original on 7 December 2021. Retrieved 7 December 2021 – via Newspapers.com.
"Blackhand Plot Against Piscopo". The Boston Globe. Boston, MA. Boston Globe. 24 February 1908. p. 2. Archived from the original on 7 December 2021. Retrieved 7 December 2021 – via Newspapers.com.