Approximately 300 works from the library of the architectural historian Prof. Dr. C.A. van Swigchem (1923-2010), VU Professor from 1970 to 1988. The Collection Van Swigchem includes historical and religious works, architectural studies and various studies on the Dutch province of Zeeland. The books are printed from the 16th to the 19th century. A highlight is De algemeene en byzondere natuurlyke historie by George Louis Leclerc de Buffon, with hand-colored illustrations (shelf mark XQ.05056.-). His personal archive and a large image collection of Protestant churches is housed at HDC.