It bore the indication "official publication" from 1899 to 1904, but this ceased when, giving the word "official" a more restricted sense, the Acta Sanctae Sedis, forerunner of the Acta Apostolicae Sedis, was declared the only "official" publication of the Holy See.
The Holy See's Annuario Pontificio has, however, always listed it not as a separate particular Church but as a Metropolia of the Ruthenian Church.
The Pontifical Yearbook continues to describe as "missing" the man who was the bishop of Pyong-yang at the time, Monsignor Francis Hong Yong-ho, who today would be a hundred years old.