Laura Ingalls Wilder was on the brink of having an award named in her honor, from the Association for Library Service to Children, when in 1952 a reader complained to the publisher of “Little House on the Prairie” about what the reader found to be a deeply offensive statement about Native Americans.

The reader pointed specifically to the book’s opening chapter, “Going West.” The 1935 tale of a pioneering family seeking unvarnished, unoccupied land opens with a character named Pa, modeled after Wilder’s own father, who tells of his desire to go “where the wild animals lived without being afraid.” Where “the land was level, and there were no trees.”

And where “there were no people. Only Indians lived there.”

The editor at Harper’s who received the reader’s complaint wrote back saying it was “unbelievable” to her that not a single person at Harper’s ever noticed, for nearly 20 years, that the sentence appeared to imply that Native Americans were not people, according to a 2007 biography of Wilder by Pamela Smith Hill.