For book/ebook authors, publishers, & self-publishers
The Thiel Detective Service Agency, though not as well known, was a major competitor to the famous Pinkerton Detective Agency in the 19th century.
I've given my character Sam Blake a job with Thiel in the novel Blake's Rule. A reputation the company had creates a minor conflict between him and the town sheriff before they become allies in saving a woman accused of murder from a lynch mob.
Read more about Thiel and the book here: https://jrlindermuth.blogspot.com/