
Machu Picchuthe
Intihuatana or Hitching Post of the Sun
Cover for Astronomical Calendar 1987
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Midsummer sunrise at Stonehenge
Cover for Astronomical Calendar 2003

Stonehengethe axis

Stonehenge from the howling highway

Winged Velocipede

Hertzsprung-Russell aurora
Cover for Astronomical Calendar 2007
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Watching an eclipse from Navajoland
Cover for Astronomical Calendar 1984

Sothis brings the flood
Cover for Astronomical Calendar 1978

Atlas
Cover for Astronomical Calendar 1996

Captain Cook and the transit of Mercury
Cover for Astronomical Calendar 2004

Navajo constellations
Cover for Astronomical Calendar 2006

Europa and the Bull
Cover for Astronomical Calendar 2005

Europa without her robe of Tyrian purple

Wells cathedral, the scissor arches and the
astronomical clock
Cover for Astronomical Calendar 2008

Orion rising
Cover for Astronomical Calendar 1974

Galileo and his telescope
at Pisa
Cover for Astronomical Calendar 2009
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