Edward Hopper's most successful event that has ever happened to him was not his one-person exhibit but instead his second one-person exhibit. In 1924 this event was the most successful because every single one of his paintings was sold. Since all of the paintings were sold this also marked the beginning of his successful art journey and long-term connections with the gallery. That connection also helped him find a representative for his career. Around 1933 he got critical recognition for his urban mature style. Which were scenes of landscapes and interior work that had a sense of quiet, loss, anxiety, and their personal disconnection with the world. Today his most iconic and more recognizable artwork that is still popular is his piece That he created in 1942 called Nighthawks. After that one person exhibited and got that critical recognition he found his own successful style in the art world. 

Murphy, Jessica. “Edward Hopper (1882–1967).” The Metropolitan Museum of Art, www.metmuseum.org/essays/edward-hopper-1882-1967.