however, he became increasingly interested in particular artists, and in the course of a distinguished career as a critic he produced monographs on "drawings of l. s. lowry" (1963), "the paintings of d. h. lawrence" (1964), "the paintings of l.s. lowry: oils and watercolours" (1975), "whistler lithographs: an illustrated catalogue raisonne" (1975), "the drawings of l. s. lowry public and private" (1976), and "carel weight" (1986). in 1968 he, with pamela hansford johnson and robert lowell, contributed to perry miller adato's documentary film, "dylan thomas the world i breathe". in addition he wrote contributions or introductions to exhibition catalogues and studies on several artists - frans baljon (1948), eva frankfurther (1962), gaudier-brzeska drawings and sculpture (1965), horace brodzky retrospective (1965), scottie wilson (1966), clifford hall (1967), carel weight (1972), john bignell chelsea photographer (1983), the (ruth) lambert collection (1988), ronald ossory dunlop (1989?), rabuzin (1990) and colin moss (1996). in 1982 he published his autobiography, "reflections in a broken mirror".