author
A regional tourism body rather than a single writer, this group put together a guide meant to help visitors enjoy Lancaster County and Pennsylvania Dutch country. The result feels part handbook, part snapshot of how the area wanted to introduce itself to travelers.

by Pennsylvania Dutch Tourist Bureau
Project Gutenberg and library catalog records credit Pennsylvania Dutch Tourist Bureau as the author of Pennsylvania Dutch Guide-Book and the Official Pennsylvania Dutch Guide-Book. That strongly suggests this was a committee or institutional author rather than an individual person.
The guide itself presents the bureau as an organization focused on making a tourist's visit to Lancaster County more interesting and enjoyable. In other words, the "author" behind the book was a local promotional group assembling practical information, regional background, and visitor-friendly context for travelers exploring Pennsylvania Dutch country.
Because this is an organization, not a clearly identified individual author, there does not appear to be a standard personal biography or confirmed portrait to use here.