found: Andreu, J. L'última frontera, gener del 2022(work deals with human pyramids) (DLC)2022428493
found: Atlas obscura, via WWW, viewed February 22, 2023(in article dated August 10, 2016, entitled A visual history of the human pyramid: While their standard triangular layouts are usually associated with cheerleading stunts and circus acrobats, human pyramids take some extraordinary forms around the world. Take the Catalan region of Spain, where, since at least the 18th century, groups have competed to create castells--castles--for festivals)
found: Bridgeman Images: the Christie Collection, 2014, via WWW, viewed February 22, 2023:under The Forze d'Ercole: The Castellani Acrobats in a Venetian Piazza, c.1746, oil on canvas (keyword: human pyramid)
found: International encyclopedia of dance, 2005, via WWW, viewed February 22, 2023:under Balanchine, George (human pyramids) under Ravel Family (human pyramids)
found: NPR Web site, viewed February 22, 2023(in transcript dated November 2, 2014, entitled With human pyramids, Catalans reach for independence: Human pyramids are popping up across Spain's northeast region of Catalonia .... They're called castells--"castle" in the local Catalan language)
