Everhardus Koster – John’s paintings

http://www.artnet.com/artists/everhardus-koster/a-view-of-haarlem-with-st-bavo-cathedral-from-the-zuLWaSstY5M0z0siWP0JXQ2 http://www.bonhams.com/auctions/16863/lot/3/ https://commons.wikimedia.org/wiki/File:Everhardus_Koster_-_A_view_of_Haarlem_with_St_Bavo_Cathedral_from_the_river.jpg https://commons.wikimedia.org/wiki/File:Everhardus_Koster_-_A_view_of_Haarlem_with_St_Bavo_Cathedral_from_the_river.jpg http://dutch-and-flemish-painters.tumblr.com/post/153857301639/everhardus-koster-a-view-of-haarlem-with-st-bavo