I thought this may of interest to some of you. Below is a link to my thread regarding my Gatling gun project I've been working on for about a year now. That project got me interested in other technology from that era and that's how I wound up starting on my first steam engine and finding this forum.
http://www.gatlinggunforum.com/forum/viewtopic.php?f=7&t=186
http://www.gatlinggunforum.com/forum/viewtopic.php?f=7&t=186