British Library MS. Sloane 2758. Paper. Quarto. 112 folios. 17th Century. 2. 'Steganographia: hoc est, ars per occultam scripturam animi sui voluntatem absentibus aperiendi certa; authore rev.mo. et clarissimo Johanne Trithemio [Abate Spanheimensi]'. ff.45-112. Exstat impressus quarto Darmstadii, 1621.