^Ashland Centennial Committee (1954). A History of Ashland Kentucky 1786–1954. Kentucky culture series. أشلاند: Ashland Centennial Committee.
^"New Law Firm Formed in Ashland". Portsmouth Daily Times. بورتسموث. 30 مارس 1923. ص. 14. مؤرشف من الأصل في 2018-06-21 – عبر أنسيستري.كوم. Hon. Edgar B. Hager, noted Kentucky orator and attorney, today announced the completion of a new law firm, in which John S. Fullerton and James P. Adamson will be associated with Mr. Hager who is a son of S. P. Hager, of this city, where he practiced law for many years prior to connection with a large West Virginia coal corporation which has necessitated his residence in Charleston for the past few years.
