St. Louis, Missouri: Balmer & Weber, [1852]. Sheet music measuring 10 x 13 ½ inches, 5 pp. Sheet music for Joseph W. Postlewaite’s “St. Louis Greys Quick Step.” Postlewaite (1827–1889) was an African American composer and bandleader, with a somewhat mysterious background: apparently well-educated, he came to St. Louis in.....