Here are 2 more sources of info. For the first, note the symbol used for light. It is the same as that for most of the Cattleya species he lists. This is a very good souce for info, but occasioanally he has errors.
http://www.orchidspecies.com/brassavolanodosa.htm
This one is my personal favorite, but, aside from his free sample sheets, you have to pay for the info. Personally, I think it is worth it for many species, and his books are tremendous values.
http://www.orchidculture.com/COD/FREE/FS231.html