George Grant Elmslie in the context of "Prairie School"

Prairie School is a late 19th and early 20th-century architectural style, most common in the Midwestern United States. The style is usually marked by horizontal lines, flat or hipped roofs with broad overhanging eaves, windows grouped in horizontal bands, integration with the landscape, and solid construction and craftsmanship. It reflects discipline in the use of ornament, which was often inspired by organic growth and seen carved into wood, stenciled on plaster, in colored glass, veined marble, and prints or paintings with a general prevalence of earthy, autumnal colors. Spaciousness and continuous horizontal lines were thought to evoke and relate to the wide, flat, treeless expanses of America's native prairie landscape, and decoration often depicted prairie wildlife, sometimes with indigenous materials contributing to a sense of the building belonging to the landscape.

The Prairie School sought to develop an indigenous North American style of architecture, distinguishing it from historical revivals that were popular at the time. It shared many ideals and design aesthetics of the Arts and Crafts Movement, though it embraced the machine and also shared ideals with modernist movements. Many architects were also part of the Chicago School, but Prairie School buildings were seen less in the commercial skyscrapers of Chicago and more in the suburban residences, though the style can be seen in throughout a variety of building types, including banks, schools, and churches. Japanese architecture and prints, interests of Frank Lloyd Wright in particular, inspired the focus on simplicity and openness in addition to the prairie landscape.