WOW.. very nice detective works here. Have you also look into the Hindu ledger page that was mentioned in this Cycle ledger page video?
https://www.youtube.com/watch?v=PXkDorcmidU&t=39s
That Hindu ledger page have the right side tore off but not sure anyone actually own the other half, it would definitely help identify the actual Hindu shipment date etc.
Keep up the good work team!