His more famous works, The Blue Boy; Mr and Mrs Andrews; Portrait of Mrs. Graham; Mary and Margaret: The Painter's Daughters; William Hallett and His Wife Elizabeth, nee Stephen, known as The Morning Walk; and Cottage Girl with Dog and Pitcher, display the unique individuality of his subjects. Joshua Reynolds considered Girl with Pigs "the best picture he (Gainsborough) ever painted or perhaps ever will".Willes, F.W. Letters of Joshua Reynolds, Cambridge University Press, Cambridge 1929
