SIOUX FALLS, S.D. — The autobiography of prairie author Laura Ingalls Wilder, a blockbuster for the South Dakota State Historical Society Press, is expected to jump to about 145,000 copies in print by mid-summer.

The press’ director, Nancy Tystad Koupal, said the small state-owned publishing house is ordering two more print runs of the book totaling about 20,000 additional copies. “Pioneer Girl: The Annotated Autobiography,” edited by Pamela Smith Hill, was released in November by the publishing house. The memoir, written for an adult audience, has been a best-seller.

Tystad Koupal was in New York on Friday promoting the autobiography and other offerings from the press at a publishing industry event.

“Lots of interest in Pioneer Girl, as always, so that’s good,” she said. “We’re just trying to find a broader audience for the history and culture of South Dakota.”

Wilder wrote her autobiography in the early 1930s. By then, she had been settled on her Missouri farm for decades, but her early life took the Ingalls family on a journey that includes what today are Wisconsin, Minnesota, Iowa, Kansas and South Dakota.