Possible Clues:

• Shipper's bill, briefly
• Shipper's bill: Abbr.
• Freelancer's bill: Abbr.
• Itemized bill: Abbr.
• Accts. payable receipt
• Stmt. detail
• Bill for services: Abbr
• Request for remuneration: Abbr.
• Small bill?
• Itemized bill: Abbr