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.

Míreanna comhchosúla

• 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.
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  Cruthaithe: (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.
  Cruthaithe: (1965)
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  Cruthaithe: (1969)
• Discussion points for the 1974 session of the Plenary Council, Order of Friars Minor /
  Cruthaithe: (1973)