J. Stevens A&T Co. Pocket Rifle

Hey there, I have acquired three weapons. One of which is a J. Stevens A&T Co.
I've never seen or heard of these, and there doesn't seem to be a whole lot of solid info out there. I was told there are lots of knowledgeable enthusiasts here, so here I am.

SN is 18661
SN on barrel, frame and skeleton stock all match.
I can comfortably drop a .22LR into it. Although, the hammer/ trigger doesn't lock, nor release properly. I have intentions of fixin it up for when my 7 month old son grows old enough to use it. Here are a bunch of pictures. Any info, help and/or advise will be greatly appreciated!
















Sorry for the cell phone pictures, as my digital camera is in my wife's rig, at her work

Thanks again,
Pyro

One guy told me he thought I had a Model 40½...
I came across this, but can't seem to locate my weapon.

http://milpas.cc/rifles/ZFiles/Manufacturers/Stevens/Stevens Arms Co.html

Pyro

Well, it seems like I might be gettin somewhere. Anyone know how to decode the SN of a J. Stevens?

Pyro

http://americansocietyofarmscollectors.hostguardian.com/wp-content/uploads/2013/05/B021_Kyser.pdf

Pyro

As in, they don't fall under the "short barrel rifle" law?

Pyro

That link you posted is of the New Model, would it be safe to say I have a New Model, not a 40-½, as I have read they're different?

Pyro