Steve Hamley , Apr 05, 2005; 06:59 a.m.
Try Jim at Midwest Photo Exchange. He usually has some Polaroid holders laying around. Also, check eBay. they come up frequently.
According to my Polaroid literature for the 81-12 I have, you need a 81-06 holder for use with the 81-09 Loading Tray. You can also use the 81-05 holder without the tray.
Mine has the tray which I use with the 81-06 holders. I've never used the 81-05 holder.