By 1719 when de la Harpe led an expedition to Caddoan lands at the mouth of the Arkansas River, the Pawnees had also acquired horses and metal weapons from French traders, and they were attacking Apaches in turn, destroying their villages and carrying off Apache women and children. In 1720, Boisbriant reported that the Paniassas or Black Pawnees had recently captured a hundred Apaches, whom they were burning, a few each day. de la Harpe planned to establish French trading posts at the mouth of the Canadian River and elsewhere in Caddoan territory, but this was not done and the Pawnee remained dependent on infrequent and casual traders, while their enemies – the Osages – benefited from a regular trade.