I am researching the Bardwell family as well. I do not know where Harmon is buried but I have found him on the tax assessments for Grant Parish through 1898. The 1899 tax assessment is too difficult to read but he is definitely not on the 1900 Grant Parish tax list. Therefore, I believe he died between 1898 and 1900. His widow remarried in 1903. He was living at the time of his death in Ward 2 of Grant Parish, Louisiana. Probably near the town of Pollock.