Citation Codes Equivalent Citations citation codes Docket Number No. 15426. Attorney(S) Mr. Truman McDowell, Jr., pro se. See more information ... Smart Summary Please sign up to generate summary. Truman McDOWELL, Jr., Petitioner, v. Henry N. GRAVEN, Judge of United States District Court for Northern District of Iowa. Petition of petitioner for writ of mandamus denied, on the ground Court is without jurisdiction to grant writs of mandamus except in aid of its appellate jurisdiction.