found: Introduction et variations brillantes sur un air national, c2001:t.p. (Stanisław Szczepanowski) p. 4 of cover (b. 12/15/1812, Naglowice, d. 1877)
found: New Grove, 2nd ed., on line, Oct. 4, 2004(Szczepanowski, Stanisław; b. Kraków, 1814; d. Lwów, Sept. 16, 1877; Polish guitarist, violoncellist, and composer)
found: La guitarra WWW site, Mar. 2, 2011(Stanisław Szczepanowski; b. July 12, 1811, Wrocieryżu near Pinczow; exact date of birth confirmed from his birth certificate in the Archiwum Państwowym w Jędrzejowie; d. Sept. 16, 1877, Lvov; guitarist who performed in Germany, Belgium, Italy, Sardinia, Switzerland, Russia, the Danubian countries, Turkey, and Egypt; composer; Polish army officer)
found: Virtual online authority file, Mar. 2, 2011(Szczepanowski, Stanisław; Szczepanowski, St.; guitarist, violoncellist, and composer)
found: Illi︠u︡strirovannyĭ biograficheskiĭ ent︠s︡iklopedicheskiĭ slovarʹ gitaristy i kompository WWW site, Mar. 2, 2011(Shchepanovskiĭ Stanislav [in Cyrillic]; Stanislaw Szczepanowski)
found: IMSLP, June 23, 2022(Stanislaw Szczepanowski (1812-1877); Stanislaus Szczepanowski, Stanisław Ignacy Szczepanowski; usage: Stanislas Szczepanowski)