Officials admired the ethnographic and pastoral work of the famous Salesian and congratulated the professional care with which it has been preserved. Fr Jesús Jurado, Vice-Postulator for Fr Bolla's Cause of Beatification, David Franco, Historian of the Congregation and Director of the Historical Archives and the Provincial Archivist Diego Aguado were present at the meeting with the delegation from the General Archives.
Fr Bolla's documentary collection contains his original diaries, books of Spiritual Exercises, letters, manuscripts, book drafts, almost a thousand photographs and various documents of this great Salesian missionary, whose Cause is still ongoing.