Thought you guys might like this.  Here is my grandpa at a tractor show driving his 1918 Moline Universal tractor with 2 bottom plow attachment.  Its a short video and I wish I was able to get more.  He has had this tractor for nearly 20 years now taking it to various shows, demonstrations ect...

http://www.youtube.com/watch?v=6oSmtYZKlbY