Obelisk (1991) Herman Makkink
obelisk (1989) Jan van IJzendoorn
Tribute to Marten Toonder (2002) The Artoonisten
Ode to the Old (1994) Silvia B.
On Spam, Lectori Salutem #6 (2017) Niels Post
Undercurrent (2002) Buro MA.AN
Unbroken resistance (1965) Hubert van Lith
Development of transport (1942) Adriaan van der Plas
War and peace (1948) Gérard Héman
War and peace (1968) Giacomo Manzù
War Memorial IJsselmonde (1949) Piet van den Eijnde
Operation Manna (Manna Monument) (2006) Observatorium
Flying seagulls (1963) Huib Noorlander
Transmission of knowledge (1963) Rudi Rooijackers