Google Drive is Google's file sync app that lets you store all of your files online alongside your Google Docs documents, and keep them synced with all of your devices.
Keep each company's signed agreement and certificate in its final files.
Your signed operating or partnership agreement stays with the right company, alongside its signing certificate and links for the owner.
Combine directors' readings into one PDF linked on the agenda.
Your meeting readings come together in presentation order, with a single packet link on the agenda for attendees.