Thanks all, for the nice comments.
Steve:  Tandy Leather (I think their stores are called “The Leather Factory” or such) has some pig suede in a limited number of colors.  I have some from them, and their hides are only about 7-8 sq ft.  I also have some from Alma Leather in London, UK.  They have a wide range of colors, and will ship here, though the hides are typically about 20 sq ft.  Andrew Crawford (smartboxmaker.com) has begun offering 1/4, 1/2, and whole hides in two or three colors as well, making the larger hides available at a reasonable price.  Those are my three best sources.
Roger