NEW YORK — CBS says it will donate the bow tie that Charles Osgood wears Sunday to host his final edition of “Sunday Morning” to the Smithsonian’s National Museum of American History.

The 83-year-old newsman is stepping down after 22 years as anchor of the leisurely-paced “Sunday Morning,” which usually dominates the news ratings on that day. CBS will devote most of the broadcast this Sunday to honoring his career.

The bookish, poetry-reciting Osgood is only the second host the show has ever had since its start in 1979, following Charles Kuralt. CBS hasn’t named Osgood’s successor yet.