Your search for ""Caspar David Friedrich"" revealed the following:

Abend (also known as Sonnenuntergang Hinter der Dresdener Hofkirche) by Caspar David Friedrich - Canvas Art

Caspar David Friedrich in his Studio by Georg Friedrich Kersting - Canvas Art

The Tree of Crows by Caspar David Friedrich - Canvas Art

Landscape with Solitary Tree by Caspar David Friedrich - Canvas Art