 Unlike Langlois, Lindgren adopted a selective approach in opposition to accumulating every possible film.Along with Langlois though, Lindgren played a major role in the development of FIAF, the International Federation of Film Archives.It is argued that the NFA gained a reputation for being uncooperative in this period, and Lindgren reportedly applied the Alizarin Red test (a disputed means of checking for the extent of nitrate decomposition) to films which were on loan from other institutions.