Any time there is a special occasion at the Vatican, a booklet is produced to commemorate the occasion that acts as a liturgical aid for participants. They are glossy pages and in various languages. Everyone gets a copy of these booklets.
Father Kunst has dozens of these. He has one from the beatification of Mother Teresa, the canonization of Jose Maria Escreva, the 25th anniversary of the pontificate of Pope John Paul II, the election of Pope Benedict XVI, the Conclaves, and the funeral of Pope John Paul II. These are significant. He has collected and been given many of them but the most significant are the ones mentioned, particularly the Mass booklet from the funeral of Pope John Paul II.
The Mass booklet for John Paul II speaks of the translatione of the body of John Paul II. In English, this is the removal of his body from his apartment to St. Peter’s Basilica.
The 4th photo featured here is the Mass booklet for the ordination of Pope Benedict XVI