Cape construction pattern/instruction...?

I'm looking to find out how to construct a cape similar to those worn in the 19th century. Full length, and wide enough to wrap around me like a cloak of sorts. In addition, I am looking for it to have the secondary layer on the outside of the cape, that covers the shoulders like a secondary cape at the top, and to have a free standing collar which can come around as if it were a coat collar, not like a "Dracula" collar that stands up at the back. This will be of the style of Sleepy Hollow or Vidocq. Any help, links, or pattern identifiers would be of great help as I am hoping to have something like this for a Halloween party.