Sheet music, scores:
Charles Callahan

Translation: Organ Accompaniment sheet music. Advanced. For 2-part choir and keyboard. 2-part. Treble . Women. , SSA .

Translation: Organ Accompaniment sheet music. Let All Mortal Flesh Keep Silence composed by Louis Vierne. For SAB choir, organ. Advent, Gathering.

Translation: Organ Accompaniment sheet music. 1951-. For unison voices, organ. Easy. Eighth. Published by MorningStar Music Publishers.

Translation: Beginning. For SATB choir and organ. Ascension. Epiphany. Moderately Easy. Published by Concordia Publishing House.

Translation: Organ Accompaniment sheet music. For unison voices, 2-part equal voices, 2-part mixed voices or SAB choir, organ. Advent, Trinity. Eighth.

Translation: For SATB choir, keyboard. Moderately Difficult. Eighth. Published by MorningStar Music Publishers.

Translation: For organ. Easter. General. Moderately Difficult. Published by Concordia Publishing House. CR.97-5998U1.

Translation: Organ sheet music. Tuba sheet music. Intermediate. 1951-. For Organ, Tuba or Cello. Bass Instrument. Sacred.

Translation: A Prelude on Greensleeves for Flute and Organ composed by Charles E. Callahan Jr.. For Organ or Piano, Flute. Easy to Medium.