Harry Potter stars — Daniel Radcliffe, Emma Watson, and Rupert Grint at the world premiere of Harry Potter and the Deathly Hallows – Part 2 in Trafalgar Square, London on 7 July 2011
Photo Credit: By Ilona Higgins - Flickr: Colour version, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=15971793

logo for Bloomsbury Publishing —
Photo Credit: By Bloomsbury - Public Domain, https://commons.wikimedia.org/w/index.php?curid=16307501

Harry Potter and the Deathly Hallows cover —
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=10325475

Harry Potter and the Half-Blood Prince cover —
Photo Credit: By Source (WP:NFCC#4), Fair use, https://en.wikipedia.org/w/index.php?curid=62211196

Harry Potter and the Order of the Phoenix cover —
Photo Credit: Fair use, https://en.wikipedia.org/w/index.php?curid=883456

Harry Potter and the Goblet of Fire cover —
Photo Credit: By Source (WP:NFCC#4), Fair use, https://en.wikipedia.org/w/index.php?curid=62210872

Harry Potter and the Prisoner of Azkaban cover —
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=883451

Harry Potter and the Chamber of Secrets cover —
Photo Credit: Fair use, https://en.wikipedia.org/w/index.php?curid=883447

Jack Warner —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=23263903

Sam Warner —
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=23770112

Albert Warner — One of the founders of Warner Bros., on page 735 of the February 8, 1919 Moving Picture World
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=34074919