Recalling Mantle's blast from the past

Friday makes the 50th anniversary of what is considered the longest home run in baseball history—643 feet by Mickey Mantle.  

 It came in the seventh inning at Tiger Stadium in Detroit against Paul Foytack. Mantle was batting lefthanded.

Reports at the time said the ball cleared the right field roof, crossed Trumball Avenue and landed near a shed at, fittingly, Brooks Lumberyard. Mantle hit several out of Tiger Stadium in his career (never out of Yankee Stadium), but this one was extra special. 

Historian Mark Gallagher later discovered that an employee at the lumberyard saw where the ball landed. The distance was calculated by the Pythagorean Theory. The theory calculated the distance from the point of impact (Mantle's at-bat) to its final destination. 

Mantle’s homer is considered the longest hit in a game where it was possible to determine an exact measurement