I am a descendant of Hannah's. There is an online book you can read to find info on O.B. Smith pages 324 - 328. If you find a photo of him or Hannah, I would like a link to it.
Past and Present of Sioux City and Woodbury County, Iowa
https://archive.org/stream/pastpresentofsio01mark#page/323/m...https://openlibrary.org/books/OL6588098M View pages 323 through 328