If James Betelle was a mystery when this project began, than Ernest F. Guilbert, his partner, was a mystery wrapped in an enigma encased in a block of lucite. There was–and is–very little information regarding this architect who clearly had a strong influence on Betelle.
Today the mystery is lessened. I found his obituary in the Newark Evening News of Friday, December 1, 1916, the same day of his death. It provides as good a biography of Guilbert as we’re likely to get.