Museum - https://www.smithsonianmag.com/smithsonian-institution/very-seinfeld-a-museum-exhibit-about-visiting-museum-exhibits-5949943/

Beedle the Bard - Photo by Professor Rosenquist

Portrait of an Artist (Pool with Two Figures) - https://www.abc.net.au/news/2018-11-16/david-hockney-most-expensive-auction-portrait-of-an-artist/10504828

The Little Owl - https://www.myddoa.com/little-owl-albrecht-durer/

Owl - https://www.pinterest.com/pin/486036984780974152/

The Crevasse - https://www.pinterest.com/pin/341007003010801367/

Monster Book of Monsters (both) - Photos by Professor Anne

Armando Dippet - https://harrypotter.fandom.com/wiki/Armando_Dippet

Value scale - https://ellustrations.wordpress.com/2016/10/23/basic-shading-techniques-used-while-sketching/

Rubin vase - https://calmgrove.wordpress.com/2014/05/30/chalice/

Deathly Hallows photograph - http://karenkavett.blogspot.com/2010/02/harry-potter-photoshoot.html