Some info on the club plaque...
1. The original version (as I recall) has the keystone state (PA) emblem on it. Up until 1973 it was not known if using the round KF logo would be possible owing to trade marks and copy rights. According to information released to the stockholders of Kaiser Motors Corporation (which got another name change in 1955 to Kaiser Industries Corporation), certain intangable items--such as Kaiser-Frazer trademarks, etc--were NOT turned over to Willys Motors, Incorporated. The club began using the original logos from Kaiser-Frazer and nothing happened so the precedent was established.
2. Unless the club filed the appropriate paperwork with the government's copyright office, the club does NOT own the design of the emblem, and does not own the logos, etc used on it. However, if someone would produce the items on their own, it would be within the club's rights to publically disavow the project and officially state they do not endorse, support or have any other involvement in the item, including receiving of any sale proceeds or profits.
3. Given Item #2, it should also be noted that "gentlemen's agreements" are not unusual in the hobby where as a courtesy to an established car club, nobody or company wilfully uses their logos and marks without written permission, be the material be officially copyrighted and registered as trade or service marks or not.
Note that I am not an attorney but have had some exposure to this kind of thing in the past.