Bills of lading, diversion orders, paid freight and other bills, car manifests, express receipts, confirmations and memorandums of sales, letter and wire correspondence, inspection certificates, invoices on purchases, receiving records, sales tickets, copies of statements (bills) of sales to customers, accounts of sales, papers relating to loss and damage claims against carriers, records as to reconditioning, shrinkage and dumping, daily inventories by lots, a consolidated record of all rebates and allowances made or received in connection with shipments handled for the account of another, an itemized daily record of cash receipts, ledger records in which purchases and sales can be verified, and all other pertinent papers relating to the shipment, handling, delivery, and sale of each lot of produce shall be preserved for a period of 2 years.