The city grew slowly at first, but an influx of German immigrants increased the population to over 10,000 in the late 19th century. The city is the home of the first kindergarten in the United States, started in 1856 by Margarethe Schurz, wife of statesman Carl Schurz; the building that housed this kindergarten is now located on the grounds of the Octagon House Museum in Watertown.
ursprüngliche Adresse: 919 Charles St.
http://www.watertownhistory.org/Articles/KindergardenFirst.htm