Portrait of Sir Joseph Paxton, May 1836 Henry Perronet Briggs (1792-1844)

The picture has something of this: people, portrait, wear, man, outerwear, administration, neckwear, leader, writer, jacket, outfit, facial expression, music, musician, facial hair, menswear, politician, sit.
Perhaps it’s a portrait of a man in a black suit and bow tie holding a piece of paper in his right hand and a book in his left hand.