Sorry that it took so long for me to reply, but I was out of the house for awhile. I did try the suggestion, view content and it definitely worked. There were downloads, but I like to know that I can view a picture regardless of whether or not there are downloads.
If someone has sent you a photo, in the body or as an attachment, even the attached file can be opened (viewed); downloading doesn't come into the picture ('cuse the pun). The image can either be opened (viewed) or saved. Certainly one may have to get past the allow or permissions bit but, after that...
In Outlook, for example, goes a step beyond, in that one can Preview a file, say a PPS & not, even, actually Open it, per se.
Thanks for your help; however, I don't use Outlook at all. If they are downloads, no problem. Pat Cook also told me to click on "VIEW CONTENT" and that help, especially as the pictures were in the body of the e-mail.
I've been putting my photographs into folders and onto an external hard drive. I also noticed that photographs that remain in the Library under "Pictures" have a tendancy to disappear.