The Book Guys, a syndicated show about book collecting carried on some 30 pubradio stations, is going off the air this week. Co-hosts Allan Stypeck and Mike Cuthbert couldn’t find a national underwriter. The show began in the 1980s in Washington state and was syndicated in the late 1990s. The two interviewed researchers, novelists, publishers, autograph experts, book conservators, printers and book craftsmen. Nine archived shows are available on their website.