From the February 1920 issue of The American Magazine:
Frederic Van Rensselaer Dey
Who wrote a thousand “Nick Carter” detective stories, aggregating more than fifty million words. The first was written in 1890; and during a period of years he averaged one complete book of about 33,000 words each week. In addition to his “Nick Carter” stories he has written others under the signatures Ross Beekman, Dirk Van Doren, Varick Vanardy, and also under his true name, Frederic Van Rensselaer Dey.
Mr. Dey was born in 1865, in New York City. He now lives in Nyack, on the Hudson. His article, beginning on the opposite page, is a human document of extraordinary interest.