Magnetical observations, (245pp), 01 May 1858-31 December 1858 Unit ID: MA 392 Date: 1858-05-01/1858-12-31
Magnetical observations, (306pp), 10 February 1859-31 December 1860 Unit ID: MA 387 Date: 1859-02-10/1860-12-31
Magnetical observations, (365pp), 01 January 1861-01 January 1862 Unit ID: MA 388 Date: 1861-01-01/1862-01-01