Frederick R. Koch (1932–2020) was an American collector, philanthropist, and eldest son of Koch Industries founder Fred C. Koch. Unlike his brothers, he pursued the arts, building major collections of rare books, manuscripts, and drawings.
William I. Koch (born 1940) is an American businessman and entrepreneur who founded the Oxbow Group after selling his stake in Koch Industries. He is also known for financing the winning 1992 America’s Cup sailing team.
Harry Koch (1867–1942) was a Dutch immigrant, printer, and newspaper publisher in Quanah, Texas. He founded the Quanah Tribune-Chief and was the father of Fred C. Koch and grandfather of industrialists Charles and David Koch.
Louis Kregel (1888–1939) and his son Robert Kregel (1919–2011) were Dutch American booksellers and publishers who built Kregel Books in Grand Rapids, Michigan into a leading distributor and publisher of Christian literature.
Peter Kuyper and his wife Lucille acquired the Rolscreen window screen company in 1925 and moved it to Pella, Iowa. Their firm evolved into the Pella Corporation, a major manufacturer of windows and doors.
Doug Meijer is an American businessman and co-chairman of the Meijer retail chain. The grandson of founder Hendrik Meijer, he helped lead the family-owned supercenter company’s expansion across the Midwest alongside his brothers.
Hendrik Meijer (1883–1964) was a Dutch American entrepreneur who founded the Meijer grocery business in Michigan in 1934. His company pioneered the American supercenter retail concept and later expanded into a major Midwestern retail chain.
Hank Meijer is an American businessman and author who serves as co-chairman of the Meijer supercenter retail chain. Grandson of founder Hendrik Meijer, he helped lead the family company’s expansion while also writing historical biographies.
Frederik “Fred” Meijer (1919–2011) was an American retail executive who expanded the Meijer family grocery business into a major Midwestern supercenter chain. He pioneered the supercenter retail concept and later supported cultural and educational philanthropy in Michigan.
Mark Meijer is an American businessman and president of the Meijer supercenter retail chain. The grandson of founder Hendrik Meijer, he joined his brothers in managing the family company while also developing a major regional emergency medical services business.















