"These are parts of an ongoing dialogue, and suddenly a letter has surfaced," he said.

It was highly controversial stuff when the letter surfaced during the 1992 Democratic primary in New Hampshire.

The letters first surfaced in Pittsburgh newspapers last month.

No official documentation, letter or decree from the Spanish Crown related to the creation of these notes have surfaced.

The first letter from Lombardo surfaced on May 4, 2005 and was four pages long and riddled with spelling errors.

Other letters have surfaced only recently, as their recipients died and bequeathed their correspondence to public institutions.

Another letter penned by Fahey surfaced in March 2007.

An open letter allegedly sent by "Trinidad" from his imprisonment surfaced on the internet and was posted on leftist websites.

But a decade later, a letter surfaced that was written by him in 1971.

When a team first went to the Farkas home there, no such letter surfaced.