A letter written in prison by infamous Boston mob boss James "Whitey" Bulger detailing his declining health is up for auction.

The letter, sent to one of Bulger's friends, Chris Duett, in Brockton, Mass., is seemingly at odds with federal officials who said his health had dramatically improved prior to his transfer to a West Virginia prison. The letter was mailed from Plymouth County Correctional Facility in Plymouth, Mass., before Bulger was transferred to the United States Penitentiary Hazelton near Bruceton, W.Va., where he was ultimately killed.

" ...[C]ame in here healthy, but isolation from people, little (being) up on feet, etc. is slowly wearing me down," Bulger wrote in the letter. "Also affecting my mind - in time I give it a year, it's over. By then the family can accept it easier....But I'll never kill myself."

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