4 paintings of shipping scenes along the river Thames

4 paintings of shipping scenes along the river Thames, London, by Charles Dixon RA, 1899-1902. - Watercolour with gouache, on paper, c30x80cm or smaller. - Each signed, titled and dated, blc. - 1. Above Greenwich. [18]99. 29x71.5cm. - 2. Off Purfleet. [19]02. 28x78cm. - 3. Off Wapping. [18]99. 29x71.5cm. - 4. Below Gravesend. [19]02. 27.5x78cm.