Read "The Time Traders" by Andre Norton online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
"Not to be too hopeful -- " McNeil rubbed his arm across his hot face -- "so far, so good. " After kicking from his path some of the branches Ross had lopped from the trees they had been felling, he went to help his companion roll another small log up to a shelter which was no longer temporary. If there had been any eyes other than the woodland hunters' to spy upon them, they would have seen only the usual procedure of the Beaker traders, busily constructing one of their posts.
That they were being watched by the hunters, all three were certain. That there might be other spies in the forest, they had to assume for their own safety. They might prowl at night, but in the daytime all of the time agents kept within the bounds of the roles they were acting.