(1) A Convention That Wasn't

This Newark Conference was intended as something for Easterners to attend who couldn't go to the Denvention in 1941. Fandom generally refused to support the idea because it was believed that it would conflict with the Denvention, and Sykora and Moskowitz laid the responsibility for the idea to Taurasi, who wasn't at the Philadelphia meeting. The Newarkon did not take place.

from Fancyclopedia 1 ca. 1944
The proposed Newark Conference.

(2) A Series of Conventions

"Newarkon" was sometimes used as a series name for the FPWESFC and subsequent Open ESFA series.