The idea of major universities across this country having conservative or libertarian professors is unheard of. The mainstream makes it as if the liberals have control over the academic setting in this country and they are kind of right. Then, if there are professors out there that have a libertarian or conservative lean they tend to hide out of fear.
Joshua Dunn, a tenured professor at the University of Colorado at Colorado Springs, is one of these outspoken libertarian/conservative leaning professors. He co-authored a book published in 2016. In this book, he explored the question of the existence of a liberal or anti-conservative academic bias in the United States via interviews with 153 professors from 84 universities who identify as conservative.
More recently Professor Dunn gave a Ted Talk on the subject that you can see here.