The Central Research Laboratory in Amsterdam is looking for information about collections or samples of 19th century drawing materials, in connection with a project to identify lead pencils, crayon, lithographic drawing materials, and so on, by means of macrophotography, FTIR, and other methods as appropriate. Send information to: Judith Hofenk de Graaff, Central Research Laboratory, Gabriel Metsustraat 8, 1071 EA Amsterdam, Netherlands.