The iGS is the Helsinki City Library's virtual reference service. You can send your question on any subject through their web-page, and researchers will seek the answer.
"At the iGS - information Gas Station your questions are answered by reference
service professionals of the Helsinki City Library. The answer is sent to your e-mail and it is also saved in our archive. The questions will be answered in two weeks. If they cannot find an answer they will give you hints on where to look for one. In addition to the webservice iGS also has a mobile reference service unit, the Information Barrel, that you can visit on tour for example at malls or at different happenings."