Hooghe, Romeyn de. Allegorical Frontispiece to Hugo Grotius’s De Jure Belli ac Pacis Libri Tres. 1689. Etching and engraving, 200 × 155 mm. Rijksmuseum, Amsterdam.
Heukelom, J.B. (Jan Bart). Mare Liberum. 1915. Color lithograph, 100 × 69 cm. Published by S.L. van Looy, Amsterdam. Peace Palace Library, The Hague (Poster Collection, Object No. P201).