Summaria, Jim: - Jim Summaria is a veteran rock concert photographer whose photos have been published in numerous books, CDs, and publications. His lifelong passion for rock photography began as a 19-year-old armed with a Kodak Instamatic at a 1972 Rolling Stones concert. Thrilled with his first effort, he invested in a 35mm camera and a zoom lens, and sneaked onto the main floor of a Led Zeppelin concert to snap photos. One image was posted at a local record shop; the manager was impressed and hired the 20-year-old as the official photographer for a major Chicago concert promoter. Summaria went on to shoot every major rock act of the '70s. After a "side trip" into a career in corporate photography, Summaria returned to the rock concert scene in 2008, photographing many of the same acts and creating the unique "then and now" portfolio few photographers have.

Plotnick, Mark: - Mark Plotnick co-authored the consumer guide, The $mart Money $hopper (Perriday, 2nd ed., 1984). Due to his expertise, Mark was the subject of many newspaper and magazine interviews, and appeared on Chicago-area radio and television shows, including The Oprah Winfrey Show. This experience launched Mark into new, eclectic career directions, including product marketing, copywriting, publicity, trade magazine journalism, and the analysis/writing of widely-consulted marketing-research studies for a variety of U.S. and international companies. Now retired, he focuses on his lifelong passion: writing about and playing music. Mark earned a B.S. in Biology at Loyola (Chicago) University and attended one year of professional school at the Illinois College of Optometry.