Apostolic Letter Bibliorum Scientiam ("On Academic Standards for Teachers of Scripture" - April 27, 1924)
Pope Pius XII:
Encyclical DIVINO
AFFLANTE SPIRITU ("On the Most Opportune Way to Promote Biblical Studies" - September 30, 1943) - another copy from CIN
Encyclical Humani Generis ("On Certain False Opinions Threatening to Undermine the Foundations of Catholic Doctrine" - August 12, 1950) - see esp. paragraphs 21-25 & 35-39
Pope Paul VI:
Apostolic Letter Sedula Cura ("On New Laws Regulating the Pontifical Biblical Commission - June 27, 1971)
Liturgiam authenticam (Fifth Instruction "For the Right Implementation of the Constitution on the Sacred Liturgy of the Second Vatican Council"); from the Congregation for Divine Worship and the Discipline of the Sacraments (March 28, 2001)
"The Proclamation of the Birth of Christ" - a.k.a. the Christmas Proclamation; published by the USCCB; here is my own comparative analysis of Old and New Translations
Published Collections of Church Documents (some out-of-print by now, but still available in good libraries):
Another Good Edition: Lysik, D., ed. The Bible Documents. A Parish Resource. Chicago: Liturgy Training Publications, 2001.
Excellent Survey Article: Raymond E. Brown, S.S., and Thomas Aquinas Collins, O.P., "Church Pronouncements," in: The New Jerome Biblical Commentary (Englewood Cliffs, NJ: Prentice Hall, 1990) 1166-74.
Denzinger, Heinrich, and Adolf Schönmetzer. Enchiridion symbolorum definitionum et declarationum de rebus fidei et morum. 37th edition. Freiburg, Basel, Rome & Vienna: Herder, 1991.
Megivern, James J. Official Catholic Teachings: Biblical Interpretation. Wilmington, NC: Consortium Books, 1978.
Rome and the Study of Scripture: A collection of papal enactments on the study of Holy Scripture together with the decision of the Biblical Commission. 7th edition. St. Meinrad, IN: 1962.