[RICHARD]

If you want  to know When a U.S. stamp was used  on  cover the earliest date  or first day cover. Here  is the up to date list of all early U.S. covers. U.S. Scott #1 up to over #500 U.S. stamps used on cover and who found them. This list changes weekly some times. This is the experts list to help keep track of the newest finds on rare covers. If you collect U.S. First day covers of old stamps click on the pdf below, And if you ever need a new list email me ill send you the most up to date list.