sentences:  Elsa Kopp opened the first Kopp's stand at 6005 W. Appleton Ave., Milwaukee, Wisconsin (now the site of Junior's Frozen Custard) in 1950.A German immigrant with no prior business experience, Kopp started the stand after her husband, Karl Kopp, developed Parkinson's disease.Some support in starting the business came from Leon Schneider, a custard machine repairman (the founder of Leon's Frozen Custard in 1942), whom Elsa Kopp had met while working at a bakery.