The recent rave over Colleen Hoover

Mike Wolfe is mourning the loss of a close friend. Following the return of American Pickers on Jan. 4, and ahead of a new episode on Jan. 18, the History Channel star took to Instagram to pay tribute to Elmer Duellman, one of his mentors and the owner of Elmers Auto & Toy Museum in Fountain City, Wisconsin.

"Oliver James is a 34-year-old man who has struggled with reading his whole life. He has taken to “book-tok” to document his goal of reading 100 books this year."