The Clarion was published bi-monthly by and for the men of APO 853 (Camp O’Reilly, Puerto Rico), c/o Postmaster, Miami, Florida. Authorized by Col. Miguel A. Muñoz, Post Commanding Officer. The publication was both in English and Spanish.

Staff (English section):

• Editor: Pvt. José Prados Herrero
• Assistant Editor: Pfc. Walter Strombach
• Staff Photographer: S/Sgt. Ralph Tatman
• Art Editor: Sgt. Gerard Wilson

El Clarín (Spanish section) staff, listed separately on page 9:

• Director: Pvt. J. Prados Herrero
• Redactor Gráfico (Graphic Editor): Sgt. R. Tatman
• Colaboradores (Contributors): M/S Astolfo Rodríguez; Sgt. José Ortiz Vázquez; 1st Sgt. A. Itara; Pvt. José Figueroa; Cpl. Miguel Vázquez; Sgt. P. Vázquez Urbina; Sgt. Manuel A. Vélez