Edwin H Myers Jr on October 28th, 2020:
The builder that electrified and enlarged this organ was George D. Harrison Pipe Organ Service. Red Hook, New York. I'm not sure if he did the work in the 1950s or 1960s. He started his business in 1954.

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Database Manager on January 25th, 2013:
New console for the existing organ. Identified by T. Daniel Hancock, using information found in Foley, Mike. "Pipework." The American Organist, Vol. 46, No. 10 [October 2012], p. 30. -- Foley writes, in The American Organist, on January 4, 2010, "sometime in the morning hours, Mr. Astor's [memorial] plaque fell squarely onto the organ console. To say is was damaged would be like saying the Titanic got wet. To be clear, the plaque, weighing more than 1,000 pounds, wasn't even scratched. The console was destroyed." Foley supplied a new console from Organ Supply Industries for the organ which is a George Stevens tracker (date unknown) that was electrified and enlarged in the 1950's by an unknown builder.