The Blaine County Journal News-Opinion - We've Got The County Covered

Arthur Valentine, who began manufacturing diners that could be shipped via flatbed trailer or railcar, introduced an innovative way for buyers of his diners to finance them. At the end of each day the diner operator would deposit, in cash, a portion of the day's revenues in to this lock box by the diner's front door. A Valentine Manufacturing rep would collect the payments monthly. Once the payments paid off the loan, the diner owner was given the key.