From the site I mentioned above:
"The circumstances surrounding the production of Rinehart's North American Indians are unclear. According to John Carter, Senior Researcher at the Nebraska Historical Society and an authority on Rinehart, the Rinehart-Mardsen Studio operated in Omaha until the 1930s, when it was purchased by the Brandise Department store. Mardsen continued to run the studio until the negatives were acquired by Royall Sutton in the 1960s, who then began an ambitious project to produce Rhiehart's North American Indians. Other research has suggested that it was intended as a two volume set containing 130 portraits, bound in leather, and took about six weeks to produce. In a newspaper clipping acquired by Cowan's some years ago, the reporter noted that the sets had been offered for sale for "about 10 years" at a cost of $1500. The article also makes it clear that Sutton had had little luck in marketing the sets, and was attempting to peddle the volumes at gun shows. There has been some speculation that Sutton was attempting to reproduce a series printed in 1939 for the Omaha opening of the movie "Union Pacific." Other sources (WorldCat) think this was published in the 1920s, about a decade earlier."