Descriptor Systems was founded in 1984 by Joel Barnum and Tom Gaven (who has since moved on to to other things). Since then, we have been in the technical training business, providing courseware and training services to companies across the United States, Canada, Europe and Asia. We specialize in programming languages and related technologies, such as Java, C++ and XML.
Our mailing address is:
Descriptor Systems
P.O. Box 461
Marion IA 52302 USA