Image taken from:
http://data2.collectionscanada.ca/ap/c/c009528.jpg
http://www.madeira-edu.pt/estabensino/ebssantana/comenius/images/simbol4.gif
http://www.enchantedlearning.com/explorers/gifs/Hudsonmap.GIF
http://www.newnetherland.org/images/ship6.jpg
