Yours, Etc.: Origins and Uses of 8 Sign-Offs
also woolly, 1570s, "resembling or made of wool," from wool + -y (2). Meaning "barbarous, rude" is recorded 1891, from wild and wooly (1884) applied to the U.S. western frontier, perhaps in reference to range steers or to unkempt cowboys.
Long woolen underwear; long johns (1940s+)