Edit: we'd earlier identified a possible cooperative action between the Knights of Columbus and the Masons, where a pancake breakfast benefit sponsored by the Masonic Lodge was being permitted at a Knights of Columbus Hall, giving the very clear idea that they were cooperating and approving of each others aims and goals.
In an October version of a Knights of Columbus circular flier in 2008, there was this admonition on the bottom, really more of a CYA after the fact. How many Knights have actually read it at the bottom of the page?
James Terwedo is the Knights Counsel (who is listed as the contact person in the 2008 explanation) and is the same one who made the incredible argument that since the Knights don't technically own their brick and mortar that they'd have to rent them to homosexual organizations as long as they don't overtly oppose Church teaching.
In any event, it's interesting that Mr. Terwedo was aware of the prohibition against Knights belonging to the Masonic Lodge in the context of the planned benefit. What follows is the excerpt from the Knight's flier:
Can Masons be members of the Knights of Columbus? The answer is no!
Why not? Because, the constitution of the Masons is in conflict with the
precepts of the Catholic Church. In order to be a member of the Knights of
Columbus, a person must be a practical Catholic in union with the Holy See.
The Holy See is the Vatican. A person can be a practicing Catholic, ie goes to
church, takes communion, etc., but not necessarily be a practical Catholic. A
person who is a Mason can not be a practical Catholic because he belongs to an
organization that has a written constitution contrary to the teachings of the
Catholic Church. A Catholic who is a Mason can resign his membership in the
Masons and thereby become eligible to become a KC. Most of us know some
good Christians who are our neighbors, fishing buddies, relatives, etc. and they
are Masons. But even Catholic Masons, can not join the Knights of Columbus.
If you have any questions, please contact State Advocate, Jim Terwedo at 952-
492-2800.