This section contains papers relating to various premises occupied by the Cambridge Philosophical Society from its beginnings, including 1830s records of the work of Charles Humfrey, architect . The Society held its first meetings in the Museum of the (old) Botanic Garden before moving, in April 1820, to rented rooms above a shop managed by Mr C Bulstrode in Sidney Street, facing up Jesus Lane. In 1832 the Society leased land from St John’s College in All Saints Passage and built its own house there, raising money by selling bonds to Fellows (see CPS 5/3/1). The Society occupied this house from 1833 until 1865. From 1865 until 1935, the Society was housed in a room on the upper floor of the new Department of Zoology and Comparative Anatomy on the University of Cambridge’s New Museums Site, thus beginning the formal association of the Society with the University. The Society’s Library was housed from 1881-1935 in a large room on the ground floor of the same building (a small portion of this building still stands on the New Museums site as at May 2015 but is to be demolished as part of the redevelopment of the site). In 1935 the Society and its Library moved to the Arts School. See the headnote to CPS 9 for a more detailed account of the Library's history and its premises.