Sorry, but I don't have any traders. I got mine from Charles Davis, who posted an inquiry about these back in November. Jim Noll offered the following:

"Charles;
Armin Pfaender's catalog has an entry for Flamingo Club, Escondido, CA,$0.25 Red,Small CRN HS,date 1964/1968.
Your $0.25 looks yellow but this might be the place.
If you have any extras I would have interest as I live in Escondido.
Jim Noll"