Pat Caputo – Calvin Johnson, Detroit Lions, NFL, his legacy and why it is complicated – The Morning Sun
Calvin Johnson elected to Pro Football Hall of Fame
DET-CHI grades: WR Calvin Johnson earns season-best grade, PFF News & Analysis
Calvin Johnson - Wikipedia
Calvin Johnson is a Hall of Fame wide receiver - Vintage Detroit Collection
Report: Calvin Johnson told Lions he planned to retire
Calvin Johnson leaves a legacy in Detroit far beyond catches and yards - Vintage Detroit Collection
In statement, Calvin Johnson to evaluate future with Lions
Lions wide receiver Calvin Johnson announces retirement after nine seasons - Washington Times