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.