CORREO MAYORES
CORREO MAYOR DE VALLADOLID


1764 JANUARY 21: VALLADOLID to MEXICO
CORO / DE / VALLA, Type I postmark in red.

CORREO MAYOR DE SAN LUIS DE POTOSI

1766 FEBRUARY 27: POTOSI to MEXICO
SA LUIS / POTOSI, Type I postmark in blue.

1765 NOVEMBER 15: POTOSI to MEXICO
SA LUIS / POTOSI,  Type II postmark in blue.

CORREO MAYOR DE QUERETARO

1751: QUERETARO to OAXACA
CORO / D. QUE / RETARO, Type I negative postmark.

1760 DECEMBER 7: QUERETARO to MEXICO
  CORO / D. QUE / RETARO, Type II negative postmark.