Houghton Mifflin Harcourt’s beginnings date back to the year 1832, when William Ticknor and James Fields founded their own publishing house. It acquired well published names such as Mark Twain and David Thoreau. In 1880 it united with the Boston based Riverside Press which was led by Henry Houghton and George Mifflin and hence Houghton, Mifflin and Company was born, making a name for itself over the years as an important publisher of fiction. Names like Philip Roth, Paul Theroux and Willa Cather feature among its authors. It expanded further in 2007 with the acquisition of the renowned publisher Harcourt Education, where Helen and Kurt Wolff had been working as co-editors since the 60s, publishing such prominent names as Günter Grass, Hannah Arendt and Konrad Lorenz. The joint catalogue, which first appeared in 2009, offers around 90 new releases every year, from a wide range of topics. In addition, it offers selected titles in eBook form, children’s and young adult’s books as well as titles from other imprints, such as Clarion Books.