Original: Three films that followed were less popular: There's Always Vanilla (1971), Jack's Wife \/O/ Season of the Witch (1972) and The Crazies (1973) were not as well received as Night of the Living Dead or some of his later work.
Simplified: Later, Romero made There's Always Vanilla (1971), Jack's Wife \/O/ Season of the Witch (1972) and The Crazies (1973) and Martin (1977). These films were not as popular as Night of the Living Dead.