Popularity of Odontoglossums seems to be growing and the International Odontoglossum Alliance promotes these beautiful plants, essentially under their historical name of Odontoglossum rather than lumping with Oncidiums.
There is a website at
Home which is building a valuable resource about the genus and allied. Although the Alliance has been going since the mid-1980's their regular newsletters are now being archived gradually to the site. The site also tells us how to register to know when editions of a new Journal get published - which will have both English and Spanish editions.
Take a look.