Many of the slides come from publishers who sold series of slides for educational use. In the selection scanned, the firm of T. H. McAllister of New York, G. Sommer and Son of Naples, Frederick E. Partington (a professional? these slides are all tinted), and some from J. Levy of Paris.

A few of the slides...

Slides of Rome

Slides of Pompeii and Italy

Slides of Greece

Color-tinted slides of Greece

Slides of Providence

Slides of other locations