Cherry Township, Minn. – Up in iron ore country, 7 miles east of Hibbing and down a dirt road, a "welcome" sign strung across the trees greeted visitors in Finnish: "Tervetuloa!"
Children played where, in a few hours, a maypole would rise. Dozens of people shuffled into the pavilion built decades ago by Finnish immigrants. Nearby, a man sawed wood for the night's traditional bonfire, which would be sent, blazing, into the lake.
They had gathered for the 90th anniversary of an unlikely park.
Around these parts, the Mesaba Cooperative Park is known, if it's known at all, as "the Iron Range's best kept secret." But thousands of people used to flood the wooded park for festivals and political rallies. Founded as a cooperative in 1929, the park acted as a Finnish community center, a popular concert hall and, according to the FBI, a hotbed of Communist activity. Recently unearthed FBI files prove what long-timers have been saying for years: The FBI spied on Mesaba Co-op Park and its members.
The park survived that surveillance — and other tough eras — thanks to its volunteers, who have tended to its modest finances and patched its floors.
"It shouldn't even exist," said Rolf Anderson, a historic preservation specialist and consultant. "It's this very fragile collection of buildings — seasonal buildings that have never been winterized. It's remarkable it survived to the present day."
In May, Mesaba Co-op Park was added to the National Register of Historic Places. Anderson, hired to prepare the park's application, unearthed a trove of FBI files along the way. At the co-op's annual midsummer festival in June, he told the crowd that he was amazed by the park's longevity: "It would have been completely unsurprising if the buildings had come down, if this entire parcel had been subdivided into lake homes."
Anderson has researched many buildings through the years, he noted, and it's rare to find one property that tells so many complex stories.