HD Folsom or Crescent.
If it was manufactured prior to 1968 it probably doesn't have one.
They don't. They are shot by PEOPLE that are using guns.
Sears didn't make guns - they sold guns marked "Sears" which were made for them by many different manufacturers. Most bolt action shotguns were made by Mossburg.
Like any other product, guns are manufactured to be sold. Buyers can be private citizens, business entities, or governments.
Few people collect IJ guns. You must go looking for them.
Valient tradename used by spear & co of pittsburgh pa on firearms they retailed
a factory
Raw materials, workers, bueprints.
Every corner of the globe
There is no one single location.
They made lefever shot guns starting around 1878 and ending in 1921.
The Iver Johnson Company