Arnold, Daniel M.
He appears in the 1919 Chandler City Directory as a bookkeeper for the Holdren & Heffner garage. It is not known if he is the same as D.M. Arnold, or related.
He also is listed in the 1920 and 1923 directories as a bookeeper for Chandler Garage, which was also owned by Holdren and Heffner.  His wife was Caroline and they had a house on N. Washington Street.
The 1921 directory also said he was a bookkeeper and that he and Caroline lived on Washington.
The 1923 directory said he was not only a bookkeeper but justice of the peace. He and Caroline lived on North Delaware.