Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://chicagology.com/columbiaexpo/fair002/
http://www.connectingthewindycity.com/2019/08/august-23-1890-midway-plaisance-handed.html
https://worldsfairchicago1893.com/home/collecting/wce-products/
https://www.khanacademy.org/humanities/art-americas/us-art-19c/xf20f462f:a-beginner-s-guide/a/the-worlds-columbian-exposition-the-midway