Brookman started his business of selling stamps in 1934. He published the Brookman"s United States. Price List, which was used as a standard pricing tool by stamp dealers for many years. From 1941 to 1945 Brookman was editor of the philatelic journal, The American Philatelist.
Brookman received the Luff Award in 1946 for Exceptional Contributions to Philately and again in 1948 for Distinguished Philatelic Research. In 1968 he was awarded the Grand Award by the American Philatelic Society’s Writer’s Unit 30. He signed the Roll of Distinguished Philatelists in 1950 and was named to the American Philatelic Society Hall of Fame in 1972.
