As industrialization and urbanization grew, concern for children's welfare also increased. Neighborhood playgrounds were believed to keep children off dangerous streets and to help them develop physical health, good habits, and social skills. In the early 1900s, the Playground Association of America suggested that an ideal playground would include multiple play devices as well as shelters, shaded spaces, garden plots, and swimming or wading pools. In Pueblo, the R.F. Lamar Company at the corner of East Ninth and Erie Streets gained a reputation for building play equipment intended to develop boys and girls into worthwhile citizens. Using CF&I steel, the company produced a wide range of equipment, including swings, teeter-totters, slides, monkey bars, vertical bars, and the distinctive Karymor merry-go-round. This Karymor merry-go-round entertained thousands of children from the 1930s until the 1950s at the Prairie Hill School in rural Pueblo County, Colorado.