AMC’s hit drama Mad Men begins its final season on Apr. 5, but fans will get to see Don Draper’s iconic gray suit and fedora for years to come. Show creator Matthew Weiner, star Jon Hamm and his castmates were on hand at the National Museum of American History on Friday to donate several costumes, props, sketches and a script from the show.

Mad Men centered on a New York ad agency in the 1960s, and the series’ producers have been praised for their attention to detail in making whatever costumes and props weren’t genuinely from that decade still look authentic.
Entertainment Curator Dwight Blocker Bowers even stated that the producers did the best research he’s ever seen for a TV show.

In addition to Draper’s trademark gray suit and fedora, the Smithsonian’s curators were interested in real period relics used in the drama, such as cigarette cartons, liquor bottles, shaving kits and tooth brushes. The objects will all be featured in an exhibit on American culture slated for 2018, and join Dorothy’s ruby slippers from The Wizard of Oz and other objects from entertainment history at the museum.

“What I love about these objects being here is that these are for the most actual objects; they are not recreation,” said Weiner. “This is the archaeological site of humanity from this period. We’re glad that we saved these things.”

While Hamm made an appearance at the museum to pose with his suit from the show, he refused to answer any press questions. Hamm recently completed treatment for alcohol addiction, and his publicist has asked the press to give the 44-year-old actor his privacy.