I got some encouragement from several members, and I will respond to them separately rather than clutter up the listserv. The SHOT description of the sessions is found here:
Preparing and submitting an unconventional session proposal. Society for the History of Technology (SHOT) Annual Meeting – Long Beach (California)
www.historyoftechnology.org
I see my contribution as what we used to call a "Poster Session." I don't have the desire to do a formal paper presentation. No guarantee that it would be accepted..