OK. I'll bite. Most of these have a photo on the back cover. On the photos are the inscription. 'Ray Manley from Shostal'. In the additional information the credit is, 'Pencils: Ray Manley; Shostal (photo) | Inks: Ray Manley'. . Now I am a photographer. by training.There is no evidence of any penciling or inking on these photos. Ray Manley was the photographer and his work was sourced through Shostal stock photo agency.
Whoever wrote that credit was probably working late and half asleep.
Here is Ray Manley
https://www.legacy.com/obituaries/tucson/obituary.aspx?n=ray-manley&pid=18598286&fhid=2500
He was based in Arizona and his work is collected and held at the University of Arizona.
Here are some of his images.
https://www.arizonahighways.com/blog-category/ray-manley
Tells me that whoever put these Western collections together for Dell, 'knew his onions!'
Ray was based in Arizona.
This one is a particularly good photo of its type, by the way.
If you are interested in the history of "Stock Photography'
http://www.eyemagazine.com/feature/article/pictures-for-rent
Cheers.
Link to the book: *** Link No Longer Exists: Western Roundup 11 ***