Daniel Louis Armstrong, jazz trumpeter known for such hits as “Hello Dolly” and “It’s a Wonderful World”. Read more about this pioneer musician here: http://www.blackpast.org/aah/armstrong-louis-daniel-1901-1971
http://www.thefamouspeople.com/profiles/louis-armstrong-302.php
http://www.pbs.org/wnet/americanmasters/louis-armstrong-about-louis-armstrong/528/
http://www.allmusic.com/artist/louis-armstrong-mn0000234518/biography
https://www.biography.com/people/louis-armstrong-9188912
and Robert Purvis:
http://www.blackpast.org/aah/purvis-robert-1810-1898
http://aaregistry.org/historic_events/view/robert-purvis-was-dedicated-abolitionist