to the thousands of Federal troops stationed in the city environs. While the brewery flourished, the brothers' relationship did not. In 1871, Henry sold his interest to Casper and moved his family upriver to Davenport, Iowa. Davenport was then part of the Tri-cities metropolitan area, including the neighboring riverfront cities of Moline and Rock Island, Illinois. A year later, he bought the established Arsenal Brewery with his brother-in-law, Rudolph Lange. The business was also known as Koehler and Lange, after its owners. With a growing, largely Germanic immigrant population that regarded beer as a staple, Davenport had cheaper operating costs than St. Louis, including river and rail transportation with caves along the river where the beer could be stored. The area proved ideal to expand the business. Weathering obstacles, including the rising Temperance Movement, in 1884 the partners were industry forerunners when they introduced a non-alcoholic beer, called Mumm, derived from a German word meaning disguise or mask. In 1875, seventeen-year old Oscar Koehler, the oldest of Henry's seven children, obtained a passport to study in Germany. After completing studies at the Academy of Brewing in Worms, he entered the University of Leipzig where he obtained a doctorate in chemistry four years later. Returning to America, he was exceptionally trained for the brewing industry. After a brief stint at his father's brewery in Davenport, Oscar moved to St. Louis where he became secretary of the Henry Koehler Brewing Assoc., a business his father established in 1880. The following year, Oscar was joined by his younger brother, Henry Jr. (1863–1912), and by 1883 the business was sold to the St. Louis Brewing Assoc. As that business was winding down, the Koehler brothers were setting up their successor business, "The Sect Wine Company", which Oscar and his father had started preparing for in 1880 on a stock offering of $135,000 ($3.4 mil. in 2010). With the stated purpose "to deal in nothing but strictly pure wines, recognizing that he who appreciates a fair article will willingly pay a fair price to obtain it", the business occupied a two-story distillery and winery of 80,000 square feet at 2814-24 South Seventh Street in St. Louis. Production of the company's signature champagne "Koehler's Sect" and its still wines was overseen by experienced winemakers from Rheims, France, and marketed by a staff of travelling salesmen. The Koehler's expansion into the winemaking business, particularly the popular "Koehler's