Encyclical letter of the Most Reverend Constantine Koser, Minister General of the whole Order of Friars Minor : on the occasion of the Feast of the Nativity of Our Lord.

Eitemau Tebyg

• Encyclical letter of the Most Reverend Constantine Koser, Minister General of the whole Order of Friars Minor : on the testimony to poverty to be shown in our travels.
  Wedi'i Greu: (1969)
• Encyclical letter of the Most Reverend Constantine Koser concerning justice within the Order of Friars Minor : theme of the Plenary Council of the Order of Friars Minor to be held in October, 1974 /
  Wedi'i Greu: (1973)
• Encyclical letter of the Most Reverend Constantine Koser, Vicar General O.F.M. : the media of social communication and of using them properly and to good purpose.
  Wedi'i Greu: (1965)
• Encyclical letter of the M. Rev. Constantine Koser, Minister General O.F.M. : the Holy Land on the 750th anniversary of the landing of the Seraphic Father, Saint Francis, at Acre.
  Wedi'i Greu: (1969)
• Discussion points for the 1974 session of the Plenary Council, Order of Friars Minor /
  Wedi'i Greu: (1973)