The Administrator is hereby authorized to order any person presumed to have knowledge of the facts to appear before him and may examine such person under oath, concerning any income which was or should have been returned for taxation or any transaction tending to affect such income, and for this purpose may compel the production of books, papers, records and Federal Income Tax Returns and the attendance of all persons before him, whether as parties or witnesses, whenever he believes such persons have knowledge of such income or information pertinent to such inquiry. (Ord. 1971-19. Passed 11-22-71.)