I've barely begun researching this event, and it's an on-going one, since
the early 70s. Below is the History Graphic, and other, from their site

Recent Posters & Logos

The event is hosted by a number of bars, like Tony's Corner Pocket, Ripcord, Neon Boots, and more.
These photos are from 2020

there are pins...

Brian Keever, 2005 photo

Vintage Clippings & Photos

1979, at The Farmhouse

1980

1982

1983

1986

1990

1993

1993 Program
Download

1994

1995

1996

1997

1998

2000

2001

2002

2003

2004

2005

Lots of coverage in this issue of GEM

2006

2007

2008

a couple pages from the 2008 program...

2009

2010

2011

2012

Download Program
Courtesy Chris Arasin

2013

Download Program
Courtesy Chris Arasin

2014

Download Program
Courtesy Chris Arasin

2015

Download Program
Courtesy Chris Arasin

2016

Download Program
Courtesy Chris Arasin

2019