You might check out this thread under Tarot Books and Media: http://www.tarotforum.net/showthread.php?t=158075&highlight=marseille
I took JMD's course when he was compiling the information for the book. It included an excellent, historical look at where the images and symbols came from and what they implied in that time period. If you are looking for keywords to use for interpreting the cards, you might be disappointed. For me, it was like getting the background on the cards, which was helpful in understanding them.