Sentence:  Others carried pemmican from `` the Forks '' to St. Paul and goods from St. Paul to Red River , as in the <WSD>summer</WSD> of 1847 when one trader , Wells , transported twenty barrels of whisky to the British settlement . 
Meaning of the word marked with <WSD> tags:  the warmest season of the year; in the northern hemisphere it extends from the summer solstice to the autumnal equinox