Two pencil and sepia wash paintings by this artist were offered at auction in 2005, one of which was On St Michael's Mount, Cornwall (1843, inscribed and dated). The catalogue comment read as follows: "John Flower is regarded as one of Leicester's foremost 19th Century topographical artists. Many of the buildings illustrated in this collection have long since been demolished. He died in Upper Regent Street, Leicester in 1861 and is buried in Welford Road Cemetery."
Wood comments that he painted all over England in the style of his master, de Wint of London.