Interior view of McAllister Bros. Opticians shop in Philadelphia, with 11 employees and customers posed for the camera. A nice floor model Brewster viewer is featured prominently, and a sign at center advertises Stereoscopes, Microscopes, Magnifying Glasses, Opera Glasses, Hand Spectacles, Globes, Cameras, Camera Obscuras, Camera Lucidas, and Surveyors, among other items.
