This has been very interesting reading. A lot of informed information here.

If I understand this, and to sum up what I have read, it would be like this?

The club owns the logo. They do not own the artwork in the center of the logo. Therefore they can and should Trademark or Servicemark it.

We (the club) have been granted permission by the owner to use that artwork for the logo and thus been given a License to use that artwork.

That permission (license) was limited or conditional that it could not be used for private use and could only be used for club use.

This would raise a final question that I have. If it has to be used for club and can't be used for private purposes, does that mean that it can only be used on club correspondance, envelopes, stationary ads ... Wouldn't that mean that individuals using it on business cards or eBay ads or websites might be a violation of that condition of the permission? Or, does that mean that it can only be used by club members with club authorization?