In the early 1930s, before Dannay and Lee's identity as the authors had been made public, "Ellery Queen" and "Barnaby Ross" staged a series of public debates in which one cousin impersonated Queen and the other impersonated Ross, both of them wearing masks to preserve their anonymity.
The cousins also allowed the Barnaby Ross name to be used as a house name for the publication of a series of historical novels by Don Tracy.