Attached is a spirited four page article that gives an account of the Jewish population surge in post-W.W. I New York City. Even as early as 1921 "nearly half of the Jews of North America lived there" and every fourth New Yorker was a Jew.
The excitement and energy that is home to New York was rapidly building and at the time this article went to print:
New York was the largest "Negro" city
New York was the largest Italian city
New York was the largest Jewish city
New York was the largest Irish city
"In New York, better than anywhere else, is 'The New York Hyphenism' to be observed and studied."
Click here to read about the Jewish population growth in the Unites States during the 1920s.