Here is a sampling:
One of the many private Masses which occured
Msgr. Guido Pozzo and Msgr. Camille Perl; present and former Secretaries of the Ecclesia Dei Commission
Archbishop Raymond Burke, Prefect of the Apostolic Signatura and Bishop Athanasius Schneider
Members of the Franciscan Friars of the Immaculate
Fr. Vincenzo Nuara, OP, Founder of Giovani e Tradizione
Solemn Benediction
Fr. Joseph Kramer, FSSP, pastor of Rome's usus antiquior parish of Ss. Trinita is seen on the right. I can also see here members of the Institute of the Good Shepherd
Incidentally, I am told that even members of the Society of St. Pius X showed up for this conference.
Visit John Sonnen for more photos.
UPDATE
The Italian blog, Messa in Latino also have some photographs up of a Low Mass celebrated by Bishop Athanasius Schneider.