(EN) Chemtrails - spraying in our sky: Petition response by Government of Canada, su holmestead.ca, 3 giugno 2003. URL consultato il 29 ottobre 2022 (archiviato il 6 dicembre 2003).
«There is no substantiated evidence, scientific or otherwise, to support the allegation that there is high altitude spraying conducted in Canadian airspace. The term "chemtrails" is a popularized expression, and there is no scientific evidence to support their existence.»