The donations to the Smithsonian’s popular culture collections just keep coming.

This Thursday Denis Leary and Lenny Clarke, two of the cast of “Rescue Me,” the firefighters’ series on FX, are donating some of their gear to the National Museum of American History.

The Star-Spangled Banner, the flag that inspired the National Anthem written by Francis Scott Key, rests at the National Museum of American History. Soon objects from “Rescue Me” will be part of the Smithsonian collections. (SUSAN BIDDLE/THE WASHINGTON POST)

Dwight Blocker Bowers, the curator of the museum’s entertainment collections, will accept a firefighter costume and some tools from the show’s cast and its executive producer Peter Tolan.

The show, by the way, returns for its final season Wednesday night.