Santa Maria (Brazil) — 1954 (1700)
Rubem Hellwig was driving when he saw a football-shaped machine, the size of a Volkswagen, on the ground. He walked toward it and met two men of slim build, normal height, their faces brownish, wearing no helmets. One was inside the object while the other collected grass samples. They spoke to Hellwig in a strange language, and yet he said he understood they were asking for ammonia. He directed them to a nearby town. The craft van- ished silently and instantly with blue and yellow flames. (1; Humanoids 33)
Source: Passport to Magonia
Case: 126