It is important to clarify these allegations since anti-Semites flood the WWW with repetitions on them.
Yair: There is no proof of this. Even if it were true (and I think it is not) it would not prove anything. I am afraid to say that The Universal Jewish Encyclopedia may not always be such a good source and "the Rosicrucians" are even worse…
The same applies to all similar articles and Conspiracy Theories.
These sources are unclean. They are liable to inculcate into you pagan values.
They tell you that a certain symbol or group etc has an evil mystical agenda and then describe that "agenda" to you taking you round in circles. By the time you are finished you will have unknowingly absorbed elements of a sinister doctrine against the Bible, against the Jews, and against the Children of Israel. You are liable to be on the verge of accepting heathen doctrine.