One of the first female professors in the United States, Maria Sanford was an English professor at the University of Minnesota for nearly thirty years. Her exceptional teaching, notable public lectures, and active community leadership led many to call her "the best-loved woman in Minnesota."

Minnesota State Senator Anton J. Rockne took pride in the nickname "Watchdog of the State Treasury." Yet as America's Great Depression deepened in 1932, he fought against programs for the poor and his opponents branded him "Commander-in-Chief of the Hunger Brigade."

After New York City schoolteacher Harriet Duncan came to Minnesota in 1868, she became an advocate for temperance and women's suffrage. She was president of the Minnesota Woman's Christian Temperance Union (WCTU) for seventeen years and urged the WCTU to work on behalf of women's rights more broadly.

The Grand Army of the Republic (G.A.R.) was a fraternal organization which existed from 1866 to 1956. It was composed of veterans of the Union Army, United States Navy, Marines, and Revenue Cutter Service who served in the American Civil War. The organization allowed veterans to communicate with one another and plan reunions. At its peak in 1890 it was a powerful organization, supporting the rights of veterans and primarily Republican politicians.

First founded in 1903 as the Minnesota Valley Canning Company (MVCC), the Green Giant Company, as it later became known, became one of the largest producers of canned corn and peas in the United States. From its base in Le Sueur, the company developed new ways of growing, manufacturing, and marketing canned vegetables. Its mascot, the Jolly Green Giant, can be found in grocery stores around the United States.

In December 1901, botanist Alexander Pierce Anderson created puffed rice while experimenting with starch crystals in his laboratory. Although he did not yet realize the significance of his discovery, Anderson's new breakfast food would make him a nationally known figure and the face of a Quaker Oats advertising campaign for almost a decade.

In 1898, four hundred members of the Fifteenth Minnesota Volunteer Infantry were hospitalized with typhoid after camping at the Minnesota State Fairgrounds. U.S. Army surgeons decided the epidemic's source was the public water of Minneapolis.

In 1871 Minneapolis built the first public waterworks in Minnesota to pump water from the Mississippi River. The city's attempts to provide clean, safe water led to decades of efforts to improve and expand the waterworks.

Mennonites arrived at Mountain Lake in 1873. Mennonites are a Protestant Christian group with sixteenth century European origins. Their name refers to Menno Simons, who was a Dutch religious reformer. Simons preached a fundamentalist, more literal interpretation of the Bible. He also emphasized the importance of adult baptism. Along with these beliefs, Simons promoted a simple way of life similar to Jesus Christ and the apostles. As part of his creed, he stressed the importance of Christian brotherhood, pacifism, and the primacy of family in Christian life. The tenet of pacifism played a significant role throughout Mennonite history.

Before burning to the ground in 2011, the Swany White Flour Mill was the last remaining nineteenth-century mill in use in Minnesota. Located in Freeport, the mill produced white flour, mixes, and other grain products for more than a century. It was a local landmark and was a frequent stop for people interested in the history of milling and bread baking.