SALT LAKE CITY (AP) — As Sen. Orrin Hatch prepares to leave Washington after more than 40 years, he is unveiling plans for a library and think tank bearing his name in Salt Lake City.

Organizers say The Hatch Center will house some 3,000 boxes of his papers and partner with a Utah university with the goal of “leading a movement” toward civility and bipartisanship.

Hatch is one of the longest-serving U.S. senators in history and his collection includes impeachment documents from the Clinton presidency and signed boxing gloves from Muhammad Ali.

The 83-year-old conservative led a bipartisan effort to pass the American Disabilities Act and landmark generic-drug legislation, though he’s also clashed with opponents in recent years.

He announced his retirement in January after helping to pass a sweeping tax-code overhaul and persuade President Donald Trump to downsize two national monuments.