If you’re looking for a little extra Lutheran influence on your summer reading list, have you considered BookTalk? It’s available through KFUO (radio station 850 AM if you’re in the greater St. Louis area or online worldwide).
By the way, KFUO remains the longest continually operating Christian radio station in the United States (Thanks, Wikipedia, for backing me up on this one.), and it is owned and operated by The Lutheran Church—Missouri Synod.