Was posting that, yeah I have sources to the letter from El Pais and El Tiempo (http://www.noticias24.com/actualidad/?p=12551)
The El Tiempo link has all the letters we know about so far, in the original Spanish. Glad there is a translation now by el universal, noticed NRO just picked up on the story.
Although in English I think it appeared here first on Free Republic.
NRO is reading it wrong, again “gringos” in this context means “The Americans” I think. Not a group of Americans Raul met with.