I have a list. Sorry, I don't know when Gibson appeared. The event is invitation only, the majority being political folk and their staffs who work on Capitol Hill. Neat event, great food but July in DC is brutally hot. I work a few blocks away and managed to get in once. After attending the event, I compiled the list below from information available on the web. There is usually a HOF that appears and guests are rarely repeated; well, except for Ray Knight, who worked for the Nationals at the time.
NAMI hosts the event -
https://www.meatinstitute.org/
2022
2021 ?
2020 ?
2019 Rollie Fingers Brady Anderson Ray Knight 7/17/2019
2018 Tim Raines Lou Piniella Ray Knight 7/18/2018
2017 Jim Palmer Al Hrabosky Jennie Finch 7/19/2017
2016 Andre Dawson Andy Van Slyke Jack Clark 7/14/2016
2015 Tony Perez Bill Buckner Mookie Wilson 7/22/2015
2014 Steve Carlton Cecil Cooper Ken Griffey Sr. 7/23/2014
2013 Lou Brock Chris Chambliss Jim Sundberg 7/18/2013
2012 Paul Molitor Willie Horton 7/18/2012
2011 Whitey Herzog Mickey Lolich Felix Milan 7/27/2011
2010 Lee Smith Dale Murphy Ron Guidry 7/21/2010
2009 Phil Niekro Jack Morris Vince Coleman 7/22/2009
2008 Bruce Sutter Bucky Dent Oscar Gamble 7/23/2008
2007 Robin Roberts Bob Boone Al Bumbry
2006 Juan Marichal Craig Nettles Mike Boddicker
2005 H. Killebrew Tommy John Luis Tiant 7/20/2005
2004 Fergie Jenkins Davey Johnson Frank Howard 7/21/2004
2003 Jim Rice Greg Luzinski Kent Tekulve 7/23/2003
2002 Bobby Grich Don Larsen Jim Gott 7/24/2002
2001 Ron Cey Doug DeCinces Bobby Richardson
2000 Whitey Ford Boog Powell Wilmer Fields
This is from a member of the House, so all three did appear at one of the hotdog lunches:
https://books.google.com/books?id=1M...idrych&f=false