After the informal sending of money with couriers in the 70s and 80s, remittances began to be sent with money orders, USPS Money Orders or other MOs in the market, sent by migrants using courier companies. These companies grew and prospered, mainly serving Central & South America. There the MOs had to be cashed by Exchangers and Casas de Cambio who had to collect and send those MOs for deposit in US Banks. Listen to this part of the story!