Ralph J. Roberts - Crunchbase Person Profile
Expression Winter 2009 by Debra Falzoi - Issuu
The Boston Globe - November 20, 2019, PDF, Israeli Settlement
Comcast founder Ralph Roberts, 95, dies
The boston globe december 23 2016 by 24news - Issuu
Comcast founder Ralph Roberts, 95, dies
Comcast, Ultimate Pop Culture Wiki
Ralph Roberts Dead: Comcast Founder Dies at 95 – The Hollywood Reporter
Comcast founder Ralph Roberts, 95, dies