The piece on the left is black and white tissue paper, spun, and then core spun with a commercial black single. I haven't measured the yardage yet.
In the middle, I have 15 yards of recycled silk fabric, spun, and then plied with the same paper yarn.
And finally, on the right is six yards of the paper yarn spun with some black and white silky thread, hand knotted and then waxed.
A whole package of tissue paper will make a lot of paper yarn. I filled one bobbin and still have some strips left over.