The declaration of Iohn Pym Esquire upon the whole matter of the charge of high treason against Thomas Earle of Strafford, April 12, 1641 : with An argument of law, concerning the bill of attainder of high treason of the said Earle of Strafford, before a committee of both Houses of Parliament, in Westminster Hall by Mr. St. Iohn His Majesties Solicitor Generall, on Thursday, April 29, 1641 /