Some more Sphere info:
<http://www.swtpc.com/mholley/Sphere/First_Sphere.htm>
<http://www.digibarn.com/collections/mags/byte-sept-oct-1975/two/index.html>
<http://www.swtpc.com/mholley/BYTE/Oct1975/are_they_real.htm>
<http://userwww.sfsu.edu/~hl/c.photo.html>
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>