I'll just quote what some websites have put, and wonder if any pdf's of the letter or court papers on this. Most things stated bout WT have a papertrail, so this should too hopefully.
"A Swiss physician, Dr. Fehrmann, at a public meeting on Jan. 21, 1924 upset some people by asserting the B’nai B’rith and the International Jews had contributed large financial sums to the “Ernst Bibel Forscher” (that is in Swiss German the Earnest Bible Students, the followers of the Watchtower Society—were know as.) R.G. Binkele of Zurich charged Dr. Fehrmann with slander on this particular point, and the Dr, in a libel court of law successfully defended his statement.
Dr. Fehrmann brought forth a number of proofs. One letter entered as evidence was a Masonic letter from high Masonic sources dated 27 December, 1922. The letter was of unquestionable genuineness and stated, “We give them (the Earnest Bible Students), in the usual indirect ways, much money through a number of brothers, who during the war made a pile. It won’t hurt their fat pocket books. They are Jews.”