It was only Bruce Karstadt's second day as president of the American Swedish Institute when a colleague told him they needed to "go meet the nuts."
"I was puzzled," Karstadt said, but he smiled and made his way down to the basement of ASI's Minneapolis home. There, he found 50 enthusiastic volunteers from an operation called Tomte — the Swedish name for a mythological creature that resembles a garden gnome — that sold packaged nuts to help the institute keep its doors open.
That experience gave him a peek into the homespun nature of the organization founded in 1929 by Swedish-born newspaper publisher Swan Turnblad — and the energy that might transform it.
On Wednesday, after more than 31 years at the helm, Karstadt announced that he will retire early next year.

During his tenure, he grew the institute's audience of diehard Swedes into a broader, more diverse community. A key moment was a 2012 expansion that brought a new, 34,000-square-foot building, the Nelson Cultural Center, and its Nordic-inspired Fika Café.
Visitors jumped from 50,000 people to 165,000 in the building's first year, according to ASI figures.
Now, Karstadt has launched a multiyear plan to renovate ASI's original home next door, the Park Avenue mansion and carriage house that Turnblad built between 1904 and 1908.
"We're in a really very good position for this transition to happen," he said. "Transitions from one leader to the next need to happen with careful, deliberate planning and not because of an emergency."