Daniel Seth Kraus (a former graduate student) and I received Temple-Wagner Research Fellowships at The Wagner Free Institute of Science in Philadelphia. We've been investigating two mysterious and very small microscopic slides made in the mid-1850s. They're exactly what they sound like: tiny pictures that are on 1" x 3" glass slides that are so small they can't be seen with the naked eye and require a microscope for viewing. The actual image would fit into the center of this "o".
The slides were made by the Langenheim Brothers, two early and important Philadelphia photographers (they made the first panorama of Niagara Falls, the first photographs of an eclipse, and they invented the process used to make lantern slides). We'll be making a brief 10 minute presentation of our findings along with seven other fellows on Thursday, September 28, from 6 - 8 PM. We did more than figure out what's in the pictures, but you'll have to attend to learn about our discoveries. It's free, but to reserve a spot and to read more about it, jump here: https://www.eventbrite.com/e/new-perspectives-on-historic-collections-tickets-36838667446
Byron