The story
Founded by Arent de Raet on May 21, 1752, in Haarlem.1
The society started as a gentleman's club that met in the Haarlem City Hall to discuss science topics and promote the study of the arts and sciences. They pooled resources to purchase books and specimens for study, which were kept in the town hall until they purchased a building on the Grote Houtstraat (nr. 51, since unrecognizably rebuilt), where the curator of the collection lived. Under the direction of Martin van Marum, a proper museum was established with zoological specimens located there on display for the public, as a forerunner of the modern Naturalis in Leiden. Van Marum also kept a small garden for public viewing in the summer months, filled with special plants, located in the Bakkerstraat. The museum fell out of favor after Van Marum's death, and it was dissolved in 1866.
From Wikipedia’s article on Koninklijke Hollandsche Maatschappij der Wetenschappen, shared under CC BY-SA 4.0.4