Mickey Mantle

The notes from Mickey Mantle's emotional farewell address -- scribbled from his deathbed in 1995 -- is about to hit the auction block ... TMZ Sports has learned. The speech is legendary ... televised from the Baylor University Medical Center on July 12, 1995 ... when a dying Mantle begged his…

TMZ has obtained a copy of a signed Mickey Mantle letter at the center of a nasty lawsuit filed against the New York Yankees -- in which a fan claims the MLB team somehow lost his treasured keepsake. The Mantle letter in question is actually a form response that Michael Kovalovsky -- a lifelong…