Leonidas.... the design that appears on the convention tee shirts each year (and is different each year) is not the official club logo and was never intended to be the official club logo.

The tee shirt designs in the past few years are a result of a contest that is held each year for the club's annual convention chip and medal design. Usually, the runner-up design that was not chosen as the winner for the convention chip or medal is chosen for use on the convention tee shirt.