If you scroll down a bit (about 1.5 “Page Downs” on my display), there is a box containing an estimate of the time needed to produce 30 yards of homespun fabric, then she continues,
… it should take almost seven 10 hour days to produce the 5 2/3 yard of cloth for the Furr dress.
Note that the 7 10-hour days is just the cloth, there’s still making the dress! As much as I love to spin (weaving, not so much), this makes me very thankful that we have ready-made fabric and clothes easily available! I have a dear friend (who’s acquainted with the current owner of the dress) who makes historical costumes for re-enactors and those who work at historical sites, so I have a great appreciation for the amount of time and work involved in making a dress like this after you already have the fabric.