List of Green Bay Packers retired numbers - Wikipedia
Brett Favre returns to Green Bay after ugly 2008 divorce from Packers - Sports Illustrated
Memorable moment for Brett Favre, Packers at Lambeau as number retired – New York Daily News
Packers by the Numbers Update: #4
Packers News: Green Bay has gone to the Dawgs - Acme Packing Company
Green Bay Packers Set To Retire Brett Favre's #4 Jersey Number In 2015
Green Bay Packers: Team retires former QB Brett Favre's No. 4 - Sports Illustrated
Brett Favre returns to Green Bay after ugly 2008 divorce from Packers - Sports Illustrated
List of Green Bay Packers retired numbers - Wikipedia