8°. Mit 1 gef. Karte. 2 SS. Br. mit Rückenfalz (Papier minimal braunfleckig).


With map: Preliminary Chart of Patuxent River; Maryland, lower part. Triangulation bay J. S. Williams, J. E. Hilgard and Lieut. J. P. Roy ... Hydrography by the Parties under command of Lt. S. P. Lee and Comdr. W. T. Muse ... 1859 (ca. 49 x 56 cm).