OVERVOORDE, J.C, Archieven van de gilden, de Beurzen en van de Rederijkerskamers. Gemeente-archief Leiden

Maagdenhuis, Provo, stakingen en acties: Collection of pamphlets, posters, leaflets, newspaperclippings, letters and university magazines concerning the actions by the student population in the years between 1968 and 1972