The continual artistic interchanges while the almanac and the exhibition were in preparation helped to focus and intensify the form and colour of Marc’s work, and increased its expressive power. He sought to reduce the natural multiplicity of detailed forms to an almost geometrical simplicity, as is seen inYellow Cow (1911; New York, Guggenheim), Small Blue Horses (1911) and Small Yellow Horses (1911; both Stuttgart, Staatsgal.).
. “Marc, Franz.” Grove Art Online. Oxford Art Online. Oxford University Press. Web. 19 Oct. 2016.<http://www.oxfordartonline.com.ezproxy.depaul.edu/subscriber/article/grove/art/T054182>.