1897  Finding an inviting camping-ground in the open jack-pine wood, we went ashore.
1904  . . . they camped . . . in a little sheltered dell all thick with jack pines. . . .
1966  . . . this little press had once been taken apart and packed on the backs of men through 40 miles of gumbo and jack pine. . . .
2n. the wood of any of these trees.
1955  Development of techniques which make it possible to use jackpine, red and Scottish pine in making newsprint--once almost wholly a spruce and balsam product.
1962  And I skidded rails, gathering them in bundles where the men had split them into fifteen foot lengths of jack pine. . . .