So Ole Says to Lena: Folk Humor of the Upper Midwest / James P. Leary,

In the land of beer, cheese, and muskies—where the polka is danced and winter is unending and where Lutherans and Catholics predominate—everybody is ethnic, the politics are clean, and the humor is plentiful. This collection includes jokes, humorous anecdotes, and tall tales from ethnic groups (Woodland Indians, French, Cornish, Germans, Irish, Scandinavians, Finns, and Poles) and working folk (loggers, miners, farmers, townsfolk, hunters, and fishers). Dig into the rich cultural context supplied by the notes and photographs, or just laugh at the hundreds of jokes gathered at small-town cafes, farm tables, job sites, and church suppers. This second edition includes an afterword and indexes of motifs and tale types.