There's a book sold through http://www.soldusa.com that pictures a lot of the super vintage shotshell boxes.

And for the ammo itself I'd suggest Winchester Shotguns and Shotshells by Ronald W. Stadt as a place to start.

Also the new Parker book by Ed Muderlak is full of shotshell history though it deals more with the earlier types.


Destry

Out there at the crossroads molding the devil's bullets. - Tom Waits