British Library MS. Sloane 648. Paper. Quarto. 172 folios. 17th Century. Hartlib papers:- 12. Explanation of a prophecy concerning the success of God's word in England, in the year 1641; found in the 'Prodromus F[ratrum] R[oseae] C[rucis]', printed in octavo, in High Dutch, 1620. f.31b. 41. Dissertatio mystica cui titulus, 'F[raternitatis] R[oseae] C[rucis] Buccina jubilei ultimi, eoae hyperbolaeiae praenuncia', transcripta, ut videtur, e libro impresso., [Francofurti], 1618. f.77. 42. Abrahame de Frankenberg Epistola ad J. Hartlib, de operibus variis mysticis. Dat. Gedani, 25 Aug. 1646. f.88.