----Sources: Newsclip from her 100th birthday & 1926 Plat Map of Hixon Twp., Clark Co., WI.

On Wednesday, April 19, 1950, Sena Petersen reached her 100th birthday. At the time, she was living with her two daughters on the west edge of Owen, Clark County, Wisconsin. Her time in the county goes back to the old lumber days where she and her husband, P. K. Petersen, first took up residence in Hixon township in 1892. Their property, once owned by the pioneer entrepreneur, John S. Owen, bordered that of G. Lindstrom, C M. Jensen, Ben Krom, Herb Haire, C. W. Looker, A. E. Dickinson, Peter Gray and Mrs. C. S. Spaeth. Farming his forty acres, in Section 35, was merely a sidelight for the P. K. Petersen who established a brickyard from which much of the brick for early chimneys and walls in northern Clark County was manufactured. He was laid to rest in 1937. At a reception held for the celebration, her daughters said she was perhaps the last woman in Clark County to use a spinning wheel! Though Sena Petersen resided in the United States for 68 years, she always remained very much a Dane. She learned some English, but Danish was always her first language and felt very comfortable living in a community with so many others who'd immigrated from her former homeland and shared her mother tongue.