I found a 35mm trailer for “A Bugs Life” on eBay: http://www.ebay.com/itm/35mm-A-BUGS-LIFE-trailer-Walt-Disney-Pixar-film-cells-/171709924684?hash=item27fab5854c:g:f6MAAOSwNSxU-yXq
Perfect. That’s a good one, but can’t you try to create a digital transfer of that trailer like Pixar did to the film?