The Chicago Crimes Scenes Project
  http://chicagocrimescenes.blogspot.com/

Lewiston Daily Sun
  http://news.google.com/newspapers?id=QJU0AAAAIBAJ&sjid=SmgFAAAAIBAJ&dq=martin%20wojciechowski&pg=4849%2C6516242

Meriden Daily Journal
  http://news.google.com/newspapers?id=l7lIAAAAIBAJ&sjid=hgENAAAAIBAJ&dq=martin%20wojciechowski&pg=4150%2C2310513

Mobsters: Al Capone
  http://www.youtube.com/watch?v=oKOyOY7Ch4g

My Al Capone Museum
  http://www.myalcaponemuseum.com/

The Youngstown Daily Vindicator
  http://news.google.com/newspapers?id=kJNcAAAAIBAJ&sjid=_1cNAAAAIBAJ&dq=anton%20hotel%20cicero&pg=5238%2C6523289

The Lawrence Daily Journal-World
  http://news.google.com/newspapers?id=3TlXAAAAIBAJ&sjid=ukMNAAAAIBAJ&dq=ralph%20capone%20cicero&pg=3719%2C2144031

The McSwiggin Assassination as a Typical Incident
  http://homicide.northwestern.edu/docs_fk/homicide/ICS/ICS.17.pdf

The Chicago Tribune
  http://articles.chicagotribune.com/1987-06-29/features/8702170754_1_frank-nitti-crime-syndicate-pulled

The Schenectady Gazette
  http://news.google.com/newspapers?id=JF4hAAAAIBAJ&sjid=CYYFAAAAIBAJ&dq=luis%20campagna%20cicero&pg=951%2C2530001

Louis Campagna
  http://en.wikipedia.org/wiki/Louis_Campagna

Joey Aiuppa
  http://www.examiner.com/article/joe-aiuppa

The Times-News
  http://news.google.com/newspapers?id=XrtQAAAAIBAJ&sjid=SiMEAAAAIBAJ&dq=joey%20aiuppa%20cicero&pg=7140%2C2297908

Eugene Register-Guard
  http://news.google.com/newspapers?id=-hVWAAAAIBAJ&sjid=reIDAAAAIBAJ&dq=joey%20aiuppa%20cicero&pg=3629%2C3365439

Joseph Aiuppa
  http://vault.fbi.gov/Joseph%20Aiuppa

After Capone
  http://books.google.com/books?id=m5cbT_sNq9AC&lpg=PA256&ots=OmodpGNDtg&dq=Claude%20Maddox%20cicero&pg=PA213#v=onepage&q=Claude%20Maddox%20cicero

Tony Accardo Case File
  http://www.crimerack.com/tag/claude-maddox/

A Klas of Its Own
  http://chicagoweekly.net/2011/01/26/a-klas-of-its-own/

The Daily Union
  http://news.google.com/newspapers?id=jt1EAAAAIBAJ&sjid=p7YMAAAAIBAJ&dq=armory-lounge&pg=4057%2C1416555

The Miami News
  http://news.google.com/newspapers?id=La0yAAAAIBAJ&sjid=l-oFAAAAIBAJ&dq=giancana&pg=4663%2C4650424

Saint Valentine's Day Massacre
  http://en.wikipedia.org/wiki/Saint_Valentine's_Day_Massacre

The Milwaukee Journal
  http://news.google.com/newspapers?id=ZqxQAAAAIBAJ&sjid=SCIEAAAAIBAJ&dq=valentine%20massacre&pg=6465%2C3154454

The Milwaukee Journal
  http://news.google.com/newspapers?id=aKxQAAAAIBAJ&sjid=SCIEAAAAIBAJ&dq=valentine%20massacre&pg=6715%2C3432489

Chicago Magazine
  http://www.chicagomag.com/Chicago-Magazine/May-2010/Get-Capone-St-Valentines-Day-Massacre-Jonathan-Eig/

Restaurant-ing Through History
  http://restaurant-ingthroughhistory.com/2013/07/24/mob-restaurants/

Gangland Chicago History
  http://www.ganglandchicagohistory.com/

Valentine's Day Massacre: Random Photos of Killing
  http://thesaintvalentinesdaymassacre.blogspot.com/

The Pittsburgh Post-Gazette
  http://news.google.com/newspapers?id=_O0NAAAAIBAJ&sjid=hG0DAAAAIBAJ&pg=6033,1886029&dq=giancana&hl=en

The Vindicator
  http://news.google.com/newspapers?id=6Z4_AAAAIBAJ&sjid=FFYMAAAAIBAJ&dq=giancana%20aiuppa&pg=3084%2C2143417

Biography: Sam Giancana
  http://www.biography.com/people/sam-giancana-9542088?page=1

Spartacus Educational: Sam Giancana
  http://www.spartacus.schoolnet.co.uk/JFKgiancana.htm

The Miami Daily News
  http://news.google.com/newspapers?id=yzkuAAAAIBAJ&sjid=p9UFAAAAIBAJ&dq=capone&pg=5623%2C4963259

Biography: Al Capone
  http://www.biography.com/people/al-capone-9237536?page=1

The Miami Daily News
  http://news.google.com/newspapers?id=tWAtAAAAIBAJ&sjid=edQFAAAAIBAJ&dq=capone&pg=1575%2C2359474

The Miami Daily News
  http://news.google.com/newspapers?id=DVctAAAAIBAJ&sjid=6NcFAAAAIBAJ&dq=capone&pg=5389%2C1029415

FBI Famous Cases & Criminals: Al Capone
  http://www.fbi.gov/about-us/history/famous-cases/al-capone

Homicides in Chicago, 1926: Capone vs. McSwiggin
  http://homicide.northwestern.edu/crimes/mcswiggin/

Loyola University: Chicago's Past
  http://www.loyolachicagotps.com/apps/photos/album?albumid=8985809

Michael J. Corbit (2003)
  Double Deal: The Inside Story of Murder, Unbridled Corruption, and the Cop who was a Mobster, pages 194-197.