Tracks A2, A3 and B4 credited as D.R. (Derechos Reservado). Tracks A4 to B3 issued by Fania Publ. The matrix numbers of the real monophonic version of this album are: For side A: FANIA XMAS 70 M A For side B: FANIA XMAS 70 M B because this was the first Christmas album issued by Fania. Later pressings of this album were mastered by Sterling Sound with matrix numbers: F-399 A & F-399 B. Independently what the record cover and label read, all these issues were STEREO.