Walter can present, either in person or via Zoom, a lecture, illustrated with contemporary images and, if applicable, film clips from the era in question. With the in-person, the presentation can be followed by a basic-level dance class (or more advanced if desired).
Here are a few of his programs that have been recorded and posted to the Internet.
(How people really danced in the 1920s)
Dancing with the lost generation: the Paris dance scene in the Jazz Age
The Ballroom During the life of Dickens