The question of the Homeland of the Indo-European (IE) or “Aryan” language family is, as riddles in the otherwise prosaic field of historical linguistics go, of unusual importance. It pits essentially two theories against one another. Either ancestral Proto-Indo-European (PIE), mother of most Indian and European languages, was spoken in Northwestern India, some 6000 years ago. This was the dominant view for some forty years after the close kinship between these languages had been announced by William Jones in 1786. It was revived amid lots of commotion around 1990, and since 1996 it is known as the Out-of-India Theory (OIT). Alternatively, it was spoken outside India, in Homelands ranging from Bactria to Anatolia, but now most popularly accepted to have been Southwestern Russia. As these more westerly Homelands all imply that the Indian branch of this language family had entered India from abroad, probably some 3600 years ago, this alternative is called the Aryan Invasion Theory (AIT), or with a more recent weasel word, the Aryan Migration Theory (AMT). This theory has led to the grossest political abuse: by British colonialism, by German National-Socialism, and even now by Dravidianism, Ambedkarism and other “Breaking India” forces. Nevertheless, most scholars still swear by it because they assume that someone somewhere must have proven it, otherwise it wouldn't have become the official theory. But this assumption is in need of verification. Over the years, Dr. Koenraad Elst has devoted a number of scholarly papers and journalistic articles to this controversy. For easy future reference, they have been collected here.