Vintage, unused Post cards!

I'm offering a selection of unused, vintage postcards, and a bonus! The cards include: Ten, 2 cent, red, Franklin cards from about 1917 Three, 9 cent, green, Nathen Hale, from about 1975 Three, 9 cent, blue, Cesar Rodney, from about 1975 and Seventeen, 13 cent, orange, Robert Morris, from about 1981 And the bonus is: an uncancelled, 1 1/8 cent, teal envelope with non-profit postage with the caption "Volunteer yourself". Vintage. Date unknown