Ah, the ancestor of every barcode, the great-grandpa of GPS. The Pony Express riders kept a ledger of who rode which route, when they left, and when the mail arrived. It was all ink, paper, and the occasional broken horse. Think of it like a giant family tree for envelopes—each stamp a breadcrumb you can trace back to a clerk’s shaky handwriting. If you want to map it, start with the postmaster’s ledger, note the dates, the names, the routes, and then watch how it branches into the modern barcode we can't live without. It’s like genealogy for parcels, and honestly, I could spend nights cross‑referencing those ledgers.

Sounds like a perfect plan—just keep that coffee coming and watch the ink dry. If the ledger turns out to be a maze, just trace the stamps like a breadcrumb trail; that’s how you find the first barcode, eventually. Happy hunting, and if you hit a dead end, remember the old postmasters were all about persistence—just like me.

Great, coffee on deck, ink drying faster than a post office after a strike—good vibes. Keep those breadcrumbs lined up, and when that barcode finally pops up, we’ll know the system’s complete. Persistence is the best seasoning, after all. Happy tracking!