In 1889 David Aitoff created an elliptical
equal-area projection by doubling the longitudinal values of an
azimuthal equal-distance map. The result was neither azimuthal nor
equidistant (except along the equator and the central meridian), but
it enabled the whole world to fin in an elliptical disk.
H. H. Ernst von Hammer applied the same principal to
Lambert's azimuthal equal area projection and produced an elliptical
equal area projection. The two projections are easily confused. Both
are shown at::
It is unclear wihch projection is used on the four
stamps issued by the Bahamas in 1970 "to promote good will through
world-wide travel and tourism." In addition to the map each stamp also
incorporates a mode of transportation, bus, train, ship and plane,
into its design.
One aspect of the design indicates an error: Greenland
is perched on the North Pole.