Simon de Vlieger – Los Angeles County Museum of Art AC1995.179.1. Title: View of a Beach. Date: 1646. Materials: oil on canvas. Dimensions: 8.9 x 134.6 cm. Source: https://collections.lacma.org/node/178431
Jean-Joseph-Xavier Bidauld – private collection. Title: The Augustus Bridge over the River of Nera, near the City of Narni, Italy. Date: 1790. Materials: oil on canvas. Dimensions: 100.5 x 138.5 cm. Inscriptions: Bidauld Roma 1790. Auctioned by Sotheby’s, in New York, on June 8, 2017. Source: https://www.sothebys.com/content/dam/stb/lots/N09/N09639/209N09639_9FK8L.jpg. I have changed the light and contrast of the original photo.