There is some controversy about the origin of the Jargon, but all agree that its glory days were during the 19th century. During this era many dictionaries were published to help settlers interact with the First Nations people living there. The old settler families' heirs in the Pacific Northwest sent communiques to each other, stylishly composed entirely in "the Chinook". Many residents of the British Columbia city of Vancouver spoke Chinook Jargon as their first language, even using it at home in preference to English. Among the first Europeans to use Chinook Jargon were traders, trappers, voyageurs, Coureurs des bois and Catholic missionaries.