Brook's photographs were published widely in magazines such as "Time", "Vogue", "Popular Photography", and "ARTnews". In 1959 he was featured in the New Talent issue of "Art in America". In 1966 he was one of 20 photographers whose work was featured in "Life" magazine's 30th Anniversary Photography Special Issue; others included Richard Avedon, Henri Cartier-Bresson, and Robert Doisneau. He exhibited at venues around the world, including the biennial photography festival in Milan, where he won a gold medal in 1960; a solo exhibition at the George Eastman Museum in 1961; the &lt;a href="1964/1965%20New%20York%20World%27s%20Fair"&gt;1964/1965 New York World's Fair&lt;/a&gt;; Expo 67 in Montreal; and the 1970 World's Fair in Osaka.