Complex sentence: On June 30,1835, Chandler exhibited his collection in Kirtland, Ohio; according to a promotional flyer that Chandler had created, the mummies "may have lived in the days of Jacob, Moses, or David".
Split into simpler sentences: On June 30,1835, Chandler exhibited his collection in Kirtland, Ohio. A promotional flyer created by Chandler states that the mummies "may have lived in the days of Jacob, Moses, or David".