2 autograph letters signed, one of which with a half-page postscript by his brother Joseph.
N. p. resp. Vienna,  and 1830.
4to and oblong 8vo. Altogether 4 pp. One letter with autograph address.
To one Friedrich Ehrlich from Calve's bookstore in Prague.
One letter with small defect on f. 2 from opening the letter (negligible loss to text).