Charles Riggs «15 Years Online!», Wells Fargo Guided by History (blog), May 17, 2010: blogs.wf.com/guidedbyhistory/2010/05/15-years-online/
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Charles Riggs «Wells Fargo: 20 Years of Internet Banking», Wells Fargo Guided by History (blog), May 18, 2015: blogs.wf.com/guidedbyhistory/2015/05/internet-20-years/
