Hermann von Rosenberg

In late 1839 he enlisted in the Dutch Harderwijk, and soon afterwards was stationed in the Netherlands East Indies as a military cartographer, tasked with making topographical surveys.

Rosenberg had a keen interest in ornithology, and beginning in the 1860s, collected specimens in the Indies for study and classification by Hermann Schlegel at the natural history museum of Leiden.

Land und Leute in Schilderungen, gesammelt während eines dreissigjährigen Aufenthaltes in den Kolonien".

Here he writes about the famous Javanese garden at Buitenzorg, and describes the artifacts and customs of the people of Sumatra, Celebes, New Guinea and the Moluccas.

Alfred Russel Wallace named Rosenberg in his book The Malay Archipelago as "Dutch naturalist", "my friend", "old friend", "a German named Rosenberg", and as a person who gave him support on behalf of the Dutch Colonial Government.