Others not shown Americans: Peter Kilburn, a librarian at AUB, missing since Dec. 3, 1984. David Jacobsen, AUB hospital director, seized May 28, 1985. French: Magazine writer Jean-Paul Kaufmann and scientific researcher Michel Seurat, kidnapped May 22, 1985. Diplomats Marcel Fontaine and Marcel Carton, kidnapped March 22, 1985. British: Journalist Alec Collett, kidnapped March 25.