Very interesting. I spent much of my life at the McDowell fairgrounds. My family showed cattle and camped inside the cattle barn almost every year from 1968 to 2009 when my Dad passed. My Dad grew up on a dairy at 19th ave and Thomas. As a boy he witnessed the construction of the cattle barns with there Adobe walls and remarkable huge arched wooden roofs. I would love to see photos of the cattle barns under construction.