If this is a long-term (on-going) project I would consider building an app for the museums to track their collection data. The app would sync to your central st

If this is a long-term (on-going) project I would consider building an app for the museums to track their collection data. The app would sync to your central storage system. You would need to support a lot of import formats, but the app would eliminate the whole data collection problem for the long-term.