49ers great Dwight Clark upbeat but acknowledges reality of ALS – East Bay Times
Dwight Clark ALS diagnosis: 49ers legends offer support
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Dwight Clark, who made 'The Catch,' dies
Report: 49ers legend Dwight Clark dies after battle with ALS
The Last Word – Dwight Clark – Clemson Tigers Official Athletics Site
Dwight Clark, former 49ers wide receiver, dead at 61
Oakland Raiders express condolences after loss of Dwight Clark
Former NFL star Dwight Clark reveals he has ALS