He's got a website, but it's not working right now. Google's cached version says that he's in the Department of History, California State University, Stanislaus. Why would a professional historian allow himself to be paid to write a fraudulent book?
I don't doubt that a fraudulent outfit like the Discovery Institute would subsidize such a tract, and then promote their "Discovery" as if it were serious scholarship.
If Weikart has any integrity left, he should denounce the book on his website.
Professional historians usually receive rather niggardly salaries.