On June 13, 2022, the OPF Archives Interest Group (AIG) ceased to exist. What started on March 7, 2016 with a kick-off call, resulted in a report about significant properties of spreadsheets in 2021. But looking back, it was more than just work. It was also an “inspiration group”, as AIG member Kati Sein (National Archives of Estonia) voiced it. As former chair of the AIG, I think the title of this blog is warranted. Spreadsheets In 2016, National Archive members of the Open Preservation Foundation decided to join forces to work on common issues. We used the SCAPE Catalogue...