Three First Day of Issues released from the post office. One envelope carries the 1975 stamp commemorating the beginning of the American Revolution with the Concord Fight at the North Bridge. (This one has handwritten addresses on it.) One postcard carries the 1967 Leonard Baskin stamp of Henry David Thoreau, and it has an additional portrait of Thoreau on the reverse side. Then one envelope carries the 2017 bicentennial stamp for Henry. All are postmarked from Concord, Mass. An eclectic collection!