I posted on the final 1997 Section NE-3C Conclave a few days ago, and Roy Weatherbee added a comment about some additional issues.
In addition to the patch, there is also an embroidered neckerchief, and (for the stamp collectors) an irst day cover / envelope with a Loon Lodge 50th anniversary cancellation stamp that also reads: “NE-3C Conclave Station, Paul Smiths, NY 12970, August 23, 1997″
I believe there may also have been a pin, but I do not have it.
Check out the original post for the rest of his comments.
He later sent along scans of the other images from the event.
The neckerchief:

and the cover:

Can anyone confirm if a pin was also issued?
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- The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.
There was a gold 50 participation pin that was pinned over the 50 on the participation patch that has a black loop.