... [Luis Burgos] recalled that some 8 years ago, in the vicinity of Estancia La Esperanza, Gobernador Galvez, Province of Buenos Aires a young woman witnessed one of these cases: two alleged teenagers, dressed in early 20th century farming clothes, crossed her path in an empty field.
Carolina, the protagonist of this story, gave FAO a detailed account when researchers delved into the case. She explained that the two teenagers – a male and a female – whom she was seeing for the first time, greeted her by name. When she turned around to ask where they knew her from, they had already vanished.
“There are many cases in ufology that involved contacts with humanlike entities clothed in archaic dress, as though they belonged to another time,” explains Burgos, not dismissing the possibility that this situation could be the result of a “breach in time.” The specialist does not dismiss the possibility of a “dimensional doorway”, but adds that the known cases of “oddball humans” always occur within the framework of UFO manifestations. Therefore, it is “very feasible” that the current UFO flap will yield some of these experiences. - more on inexplic
Interesting but not very useful unless you have a reliable witness and hard evidence.