Notes:
1943 Street in Thorn (in color, 608).
1946 Ruins of St. Laurens Church in Rotterdam (in color, 609).
1949 Church in Dronrijp (in color, 610).
1951 Church in Voorst (in color, 611).
1955 Basilica del Ara Coeli in Rome, Italy (in color, 612).
1955 Pantheon in Rome (in color, 613) .
1961 Fort on the Gulf of Genoa in Savona, Italy (in color, 614).