1000Mueums has wide selection of prints from several museums, including Crystal Bridges https://www.1000museums.com/
Artaissance offers an endless array of images in custom sizes http://www.artthatfits.com/home.aspx
Crystal Bridges is a world class American art museum in Bentonville, AR http://crystalbridges.org/
Novo Studio offers innovative portaits and wedding photography http://www.novo-studio.com/
Mike Boyd is just one of several local landscape photographers.
Clifton Eoff is a great resource for commissioned photography.
We order our brass plates from Showcase Trophy. They have a large selection of engravable items.