| Sources  | 
- [S6690]  Washington, Death Index, 1940-2014, Ancestry.com, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2002;). 
 
  
- [S6691]  U.S., Obituary Collection, 1930-2015, Ancestry.com, (Name: Ancestry.com Operations Inc; Location: Provo, UT, USA; Date: 2006;), Newspaper: The Seattle Times; Publication Date: 10/ 9/ 2011; Publication Place: Seattle, Washington, USA; Web edition: http://www.legacy.com/obituaries/seattletimes/obituary.aspx?n=john-iwao-sumida&pid=154007436. 
 
  
- [S6692]  Web: Obituary Daily Times Index, 1995-Current, Ancestry.com, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2012;). 
 
  
- [S6388]  U.S. Phone and Address Directories, 1993-2002, Ancestry.com, (Name: Ancestry.com Operations Inc; Location: Provo, UT, USA; Date: 2005;), City: Seattle; State: Washington; Year(s): 1996 1997 1998 1999 2000 2001 2002. 
 
  
- [S1057]  U.S. Public Records Index, 1950-1993, Volume 1, Ancestry.com, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2010;), Database online.
 
Record for John I Sumida 
 
  
- [S6704]  Washington, Marriage Records, 1854-2013, Ancestry.com, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2012;), Washington State Archives; Olympia, Washington; Collection Title: Washington Marriage Records, 1854-2013; Reference Number: kingcoarchmc254499. 
  
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