After MASH

8/22/2008 1:53 PM PDT BY TMZ STAFF
The 69-year-old resurfaced at a Hollywood book signing recently, looking healthy.
Mike Farrell
Farrell joined "M*A*S*H" in it's fourth season.

During a trip to Central America in the '80s, Mike was "shanghaied into assisting with the surgery" of a political prisoner.