Library of Tibetan Works and Archives (LTWA) was started by the former Tibetan Government-in-exile (now CTA, Central Tibetan Administration). It is where all the Dharma texts of all four lineages are preserved, as well as many translations of those works into different languages.

In this video you can see Yeshe Dorje in the 70s warning foreigners not to take Gelug teachings seriously (see video at 0:40).

Luminaries and great Gelugpa teachers’ works such as Geshe Ngawang Dhargye’s would be in the LTWA during those days.