In “A New Type of Ancient Peruvian Shirt” (American Antiquity, 1955, Vol. 20, No. 3, pp. 263–73) A. H. Gayton described a late period Peruvian shirt (UNMF 15–93) from the Central Coast, collected by Edwin Ferdon of the Museum of New Mexico, especially notable for its horizontal neck opening. The more typical vertical opening has been thought to have been universal in pre- Conquest Peru. The shirt is composed of 3 long narrow webs folded vertically, seamed horizontally, with a horizontal neck slit and short sleevelike extensions closed at the ends but left open along the lower edges (Fig. 1). The 2 lower webs are of very open, almost square count, plain weave of 2-ply natural brown alpaca warps and wefts. The upper and longer one, which forms the shoulder and sleeve section, has the same open construction in natural brown alpaca for something less than half its width; the rest is warp faced in red and slate blue warp stripes.