As Mr. Armstrong prepared to play that night — oddly enough, at Grand Forks’s own Central High School — members of the Arkansas National Guard ringed the school in Little Rock, ordered to keep the black students out. President Dwight D. Eisenhower’s meeting with Governor Faubus three days earlier in Newport, R.I., had ended inconclusively. Central High School was open, but the black children stayed home.

Mr. Lubenow was first told he couldn’t talk to Mr. Armstrong until after the concert. That wouldn’t do. With the connivance of the bell captain, he snuck into Mr. Armstrong’s suite with a room service lobster dinner. And Mr. Armstrong, wearing a Hawaiian shirt and shorts, agreed to talk. Mr. Lubenow stuck initially to his editor’s script, asking Mr. Armstrong to name his favorite musician. (Bing Crosby, it turned out.) But soon he brought up Little Rock, and he could not believe what he heard. “It’s getting almost so bad a colored man hasn’t got any country,” a furious Mr. Armstrong told him. President Eisenhower, he charged, was “two faced,” and had “no guts.” For Governor Faubus, he used a double-barreled hyphenated expletive, utterly unfit for print. The two settled on something safer: “uneducated plow boy.” The euphemism, Mr. Lubenow says, was far more his than Mr. Armstrong’s.

Mr. Armstrong bitterly recounted some of his experiences touring in the Jim Crow South. He then sang the opening bar of “The Star-Spangled Banner,” inserting obscenities into the lyrics and prompting Velma Middleton, the vocalist who toured with Mr. Armstrong and who had joined them in the room, to hush him up.

Mr. Armstrong had been contemplating a good-will tour to the Soviet Union for the State Department. “They ain’t so cold but what we couldn’t bruise them with happy music,” he had said. Now, though, he confessed to having second thoughts. “The way they are treating my people in the South, the government can go to hell,” he said, offering further choice words about the secretary of state, John Foster Dulles. “The people over there ask me what’s wrong with my country. What am I supposed to say?”

Mr. Lubenow, who came from a small North Dakota farming community, was shocked by what he heard, but he also knew he had a story; he skipped the concert and went back to the paper to write it up. It was too late to get it in his own paper; nor would the Associated Press editor in Minneapolis, dubious that Mr. Armstrong could have said such things, put it on the national wire, at least until Mr. Lubenow could prove he hadn’t made it all up. So the next morning Mr. Lubenow returned to the Dakota Hotel and, as Mr. Armstrong shaved, had the Herald photographer take their picture together. Then Mr. Lubenow showed Mr. Armstrong what he’d written. “Don’t take nothing out of that story,” Mr. Armstrong declared. “That’s just what I said, and still say.” He then wrote “solid” on the bottom of the yellow copy paper, and signed his name.