The URBS Libraries are:
Accademia di Danimarca
American Academy in Rome
British School at Rome
Escuela Española de Historia y Arqueología en Roma
Institutum Romanum Finlandiae
Istituto Austriaco Roma
Istituto Svizzero di Roma
Koninklijk Nederlands Instituut te Rome
Libera Università "Maria SS. Assunta" (LUMSA)
Det Norske Institutt i Roma
Svenska Institutet i Rom


URBS Plus Libraries are:
Academia Belgica
Centre Jean Bérard de Naples
École française de Rome
Deutsches Archäologisches Institut Rom
John Cabot University Library