The two images show the front and back of a postcard mailed with the 1936-37 Christmas seal tied by a San Francisco cancel and also shows a PAQUEBOT cancel with San. Fran. Calif. The front of the card shows the N.Y.K. Line S.S. Taiyo Maru. This is the first usage of a Christmas seal that I have seen used during the proper time period and tied to the cover. The PAQUEBOT marking gives it an additional flavor.
I joined the KSS when I was in my teen age years and when I moved to D.C. to work after college I joined the Washington D.C. KSS chapter. Jim Kerr and Art Korzyn were members.