Image from Ancestry Images site
I was reading a post about finding free images online* which led me to the Ancestry Images site. The latter is a free image archive for antique prints.
I've always liked the look of antique maps due to their beautiful colors. The image above is a Map of the Holy Land published about 1865. The map would make a lovely background for a mixed media art piece.
I have a history book, from the 1800s, which also contains maps in pretty pastel colors. Take a few minutes to check out the Ancestry Images site.