any later work of his?
Yes, he reproduced masterpieces by Cézanne, Mondrian and Picasso before embarking on the "Brushstrokes" series.
Roy Lichtenstein
In the early 1960s, Lichtenstein reproduced masterpieces by Cézanne, Mondrian and Picasso before embarking on the "Brushstrokes" series in 1965. 
what is whaam? It is a diptych painting. what is meant by this term you mentioned just now? It is any object with two flat plates which are a pair, these are often attached at a hinge. how is it related to art? As an art term a diptych is an artwork consisting of two pieces or panels, that together create a singular art piece. who made the former painting? Roy Lichtenstein give one interpretation of it? UNANSWERABLE what legacy did it leave? Gianni Versace once linked the pop art images via his gown designs. who was this person you just mentioned? An Italian fashion designer and founder of Versace. is this last thing related to something in fashion line? Yes, it is an international fashion house. who are its partners? It partnered with the Mind Group firm. of which controversy was it a part? It produced a range of tops that suggested "Hong Kong and Macau were separate countries". where was this fashion house based? Milan which work of the above painter help him rose to prominence? "Look Mickey" is there any foundation named after him? Yes, Roy Lichtenstein Foundation. what is this foundation about? UNANSWERABLE
wiki:5407183
Roy Lichtenstein [SEP] Later work
In the early 1960s, Lichtenstein reproduced masterpieces by Cézanne, Mondrian and Picasso before embarking on the "Brushstrokes" series in 1965. Lichtenstein continued to revisit this theme later in his career with works such as "Bedroom at Arles" that derived from Vincent van Gogh's "Bedroom in Arles". In 1970, Lichtenstein was commissioned by the Los Angeles County Museum of Art (within its Art and Technology program developed between 1967 and 1971) to make a film. With the help of Universal Film Studios, the artist conceived of, and produced, "Three Landscapes", a film of marine landscapes, directly related to a series of collages with landscape themes he created between 1964 and 1966.