It was a GIF issue. When I replaced the reference with a JPG file, it was displayed correctly.

Now, the question begs - how does one turn on GIF support?

And, if I may go ahead and piggy-back this thread with a further HTML-related question:

Can the QtextBrowser display buttons and text fields and checkboxes?

And, hoping that the answer is yes, can my code retrieve notification of button clicks; text from text fields and the status of said checkboxes?

Thanks very much for your expertise!
Jeff