A new discovery of hidden secrets: : in severall letters, propositions, articles, and other writings concerning the Earle of Newcastle, Captaine John Hotham, and many other malignant gentry of the northerne counties. All lately found in Pomfract Castle; the originals whereof remaine now in Yorke, where they may be seene of any who desire it. With a declaration of the Committee of Yorkshire, and some observations thereupon to undeceive their deluded and oppressed countreymen.