Ask HN: Recommendation for a tool for history research (gathering)?

Hello,

I've been trying to find a tool to help me gathering and organizing historical and biographical data.

I like doing some research on specific interests, but as an amateur I do most of it on text files, sheets and mind maps in a chronological directory structure with images and documents, etc. it is horrendous, but I did not find a tool to help me managing this. Is there something for this use case out there?

I believe something like a mind map with chronological information/visualisation, cross-linking, attachments and references would work, but I'm kinda struggling to find the right tool (looking at TreeSheet and another mind-map tool right now, but it is not feeling right yet).

Thanks