The Cognoscenti, in the North Gallery at Petworth House. Captain Walcott and Mr. Apthorpe (far left &amp; right) are the only identifiable figures. Post-conservation. Photo: Matthew Hollow.

Image licenced to Timothy Don Lapham&#039;s Quarterly by Timothy Don
Usage :  - 3000 X 3000 pixels (Letter Size, A4) 
© National Trust Photo Library / Art Resource