You can use these steps to check if images are blocked:

• Open the web page that has the images missing in a browser tab.
• Click the website favicon (How do I tell if my connection to a website is secure?) on the left end of the location bar.

• Click the "More Information" button to open the "Page Info" window with the Security tab selected (also accessible via "Tools > Page Info").
• Go to the Media tab of the "Tools > Page Info" window.

• Select the first image link and scroll down through the list with the Down arrow key.
• If an image in the list is grayed and there is a check-mark in the box "Block Images from..." then remove that mark to unblock the images from that domain.

• http://kb.mozillazine.org/Images_or_animations_do_not_load
• https://support.mozilla.org/kb/Images+or+animations+do+not+show

Options>Content>Load images automatically - is this checked?

Hi Alan_r,

Yes under content 'Load images automatically' is checked with no exceptions. I do have 'block pop-up windows' checked with exceptions for several sites: Amazon.com, Drudgereport.com

What is my next step?

Thanks.

Did you check for grayed or blocked image in the Tools > Page Info > Media window?