San Francisco 49ers - Wikipedia
49ers promote WR Harper to active roster, release RB Harris – KNBR
17fba guide by Mexico Sports Collectibles - Issuu
San Francisco Chronicle General Excellence by San Francisco Chronicle - Issuu
Previous Quizzes – NFL Alumni
San Francisco 49ers, American Football Database
49ers Promote WR Chris Harper to Active Roster, Release RB DuJuan Harris
49ers Re-sign RB Harris; Waive WR Harper
San Francisco 49ers - Wikiwand
2013 Stanford Football Media Guide by DeAnna Turner/J2designs - Issuu
San Francisco 49ers, American Football Wiki