Where can I find information on dog sledding?

I have to write a 5 paragraph essay on the history of dog sledding for this english project. What are some websites, or things where I can find information on it?Where can I find information on dog sledding?Sled dogs, known also as sleigh dogs, sledge dogs or sleddogs are dogs that are used to pull a wheel-less vehicle on runners (a sled or sleigh) over snow or ice, by means of harnesses and lines. It is not certain when this unique form of transport was first thought of by humankind nor where it originated, but it may well have been in eastern Siberia, whose tribes have a long history of nomadic winter travel.