When I was doing my graduate research on nineteenth century Universalists, I kept running accross published "appointments" calendars; that is, travelling preachers' tour schedule. And they didn't have roadies in those days. (They barely had roads.)
Far easier for me then. I'll be preaching next Sunday at the Church of the Holy City, at Sixteenth Street and Corcoran Streets in Washington at eleven o'clock.
More on this as I develop my theme.