Thanks for taking the time to lend me a hand!
I was able to figure it out. Duh, I was “hot linking” to my own site on my site. Apparently WP Super Cache has an anti-hot linking feature (authored by Andrea Pernici) that I was not aware of…it displayed Mr Pernici’s photo in place of my own images.
I fixed by just uninstalling the plugin and removing the .htaccess lines that WP Super Cache added.
All is working now! Thanks again!