Hugo Black

“ We find no other principle of federal law, whether judge-made, statutory, or constitutional, which bars the granting of a mandatory remedy here. Petitioner undoubtedly has a right, under the substantive law of the State, to inspect the records of the corporation in which he holds stock, and since he has no adequate remedy at law, the federal court has jurisdiction to grant relief under its traditional equity power. ”

“ The only relief sought in this diversity action is an order to compel the defendant company to allow the plaintiff, a minority shareholder, to inspect certain corporate records. Such an order is in the nature of a writ of mandamus. Under the All Writs Act, this United States District Court does not have jurisdiction to issue an order in the nature of a writ of mandamus in a case in which that writ is the only relief sought. ”

“ While the State labels the right of action 'mandamus,' what the Pennsylvania statute actually does is to authorize an action to compel Pennsylvania corporations to permit inspection of their records by their shareholders, and the label used under state practice of course has no bearing on the question whether the federal courts have power to grant the kind of relief actually sought. ”