As I said before, I don't know if you still need the information or not, but familysearch.org also had Joseph's death certificate at this link: https://familysearch.org/pal:/MM9.1.1/X6TL-365
It states that he was buried at Hill Grove Cemetery in Miamisburg, Ohio.
(I also saw a marriage record for one of Joseph and Mollie's kids on that site, a daughter named Lydia, who was married in Indiana in 1951. Her marriage record lists her mother's name as Mary Ellen Reno.)
Find a Grave lists that Mary E. "Mollie" Franlin (1887-1977) is also buried at Hill Grove Cemetery.