psychoadept - Thanks!! Very simple - and effective. I tried the following process: Select all tracks and right click, then choose "Edit", then "Artwork". Locate the needed image - and click Open. Then Save To - "link the picture to this music track" and "save to folder.jpg". Then finally hit Save.
This will save me much time, as I am steadily building a large collection of recordings (audiobooks, poetry, etc.) and I like to have as much album and track information as possible, including the artwork. Without this simple trick, I had to add the image (album cover) on a track-by-track basis.
Thanks again, Jim