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Digital Reedition: Dieter Maurer, Claudia Riboni, Birute Gujer Technique and Design: Christian d'Heureuse, Jürgen Ragaller Image Editing: Karin Wälchli Introduction In 1967, Rhoda Kellogg published an archive of c. 8000 drawings of children ages 24-40 months. (See Kellogg, R.: Rhoda Kellogg Child Art Collection. Washington, DC., Microcard Editions, Inc., 1967; now available at LexisNexis, Reed Elsevier, Inc..) Up to now, as far as we know, no other archive of early graphic expressions was ever published, including a large sample of pictures and presented according to a classification system.
The tractainer Based on the same fundamental ideas as the click car, this electric vehicle is meant for freight transport. It consists of a drive unit, powered by the current from the electric rail, and it pulls a string of containers measuring 6m3, taking them to their delivery destinations, where they are left until they can be unloaded. Each convoy is modular and can be adapted to requirements. The drive unit is then recovered and loaded with packages for the next run.