Tulip Tree
2 of the 7 encyclopedias on this shelf carry an entry for Tulip Tree. Both are reproduced below, so you can see where they agree and where they differ.
Collier's New Encyclopedia (1921)
the Liriodendron tulipifera, one of the most magnificent forest trees of temperate North America; at- TULIP TREE taining in favorable situations a height of 100-190 feet, with a straight, clear trunk. It is the only species of the genus-which belongs to the Magnolia family and may be recognized by its large threelobed leaves, with the middle lobe cut square at the end, and large solitary tulip-like flowers having greenish sepals, and petals variegated with yellow and orange. The wood is highly esteemed, uniting lightness with strength and pale-yellow durability. It is of a color, fine-grained, compact, is easily worked, takes a good polish, and is therefore much used by house and bridge constructors, by cabinet-makers, coachbuilders, implement-makers, etc., and by the Indians for canoes. The bark is officinal in the secondary list of the "United States Pharmacopœia" as a stimulant, tonic, and diaphoretic. The noble appearance of the tree led to its introduction over 200 years ago into Europe, where it is appreciated as a great ornament for pleasure grounds, etc. It is found from Vermont to Michigan and S. to Florida and Mississippi.
Aiton's Encyclopedia (1910)
Whitewood, or Yellow Poplar, a stately American tree of the magnolia family. A fine tree for parks. The name tulip tree is derived from the shape of the large flowers. Whitewood timber is a soft, fine grained, slightly yellow wood, in great demand for wagon boxes, furniture, and boat building. It is not apt to warp or split, and is easily worked. The tulip tree grows from Rhode Island to Mississippi, and northward to Michigan.