Weeks later a new file arrived with a short, startling instruction: "Go to the address on page 9 of 'Routes and Receipts'." Page 9 was a torn photocopy of a cross-country bus ticket collection. On that page someone had penciled an address: 48 Lantry Road. The ticket's perforations were gone but the numbers were legible. 48 Lantry Road did not exist in any municipality I knew; it resolved instead to a storage unit number in a town three hours away.