1793  (1933)  After passing the last of the musiques we proceeded about a quarter of a mile in a ditch not much wider than the canoe, which nature seems to have made through the centre of a cedar swamp for the convenience of the North West Trade. . . .
1832  Cedar Swamps . . . are deep mossy bogs, soft and spongy below, with a coating sufficiently firm to uphold small cedar or fir-trees, or shrubs. Such lands are much more difficult to reclaim than any of our bogs in the United Kingdom.
1960  There's a lot of cedar swamps north of here in a few miles. . . .