This past week, something that caught my eye on Antiques Roadshow, a PBS weekly TV show.  A person brought in a pristine original of  the 1933 Joseph Jacinta Mora poster, entitled The American Cowboy Rodeo created for 1940s California Rodeo Travel posters.  The alternate title for the poster is "Sweetheart of the Rodeo."  That got my attention immediately because I immediately recognized the "Sweetheart of the Rodeo" as the album cover of the Byrds' 1968 album by same name.  Wikipedia somewhat surreptitiously mentions the name of original poster - that's all.  Here's the question:  how and why did the Byrds decide to use that specific poster for their album cover?   Anyone know?