Report dated 26.9.1842 from C.F. Holbech to Christine Stampe (Holbech dates the excursion Sunday 25.7.1842, but 25.7 in 1842 was a Monday, so he probably means Sunday 24.7.1842. Holbech has dated several entries in his report one day late).
Rigmor Stampe (ed.): Baronesse Stampes Erindringer om Thorvaldsen, Copenhagen 1912, p. 200-201.