Bill- We'd love to have one for our lab reference collection. Marty Pickands New York State Museum Cultural Resource Survey. >>> [log in to unmask] 10/03/05 8:27 PM >>> A couple of weeks ago, we were discussing pop tops, and someone referenced a National Geographics issue with a chart showing different pop top (or pull tab) styles found on different beverage cans. One list member e-mailed me that he was having trouble finding a copy. so I scanned in the chart in .jpg format. If anyone wants the scan, e-mail me off list, and I will e-mail a copy to you. Bill