Technical Support


Online Tutorials

If you are having trouble with the IHIS extraction or online analysis system, please see our brief tutorials for an introduction to our website:


Online Tutorials


Questions and Answers

For specific questions about the data or website, please search for an answer on our user forum. You can also ask a question there, which one of our staff members or a fellow user will answer.


User Forum


User Feedback / Errors

We also welcome suggestions and feedback about errors, inconsistencies, or ambiguities in the data and documentation. If you discover a significant error, we will happily send you a complimentary IHIS mug. Please send feedback to ihis@umn.edu


Way To Go!