About 1886, if the marking is J. Stevens Arms & Tool Co.
Savage Arms didn't move to Westfield until 1961. So being that Savage owned Stevens I'm guessing it's around that time. Not sure what year the 58 was introduced and discontinued, but I'm guessing a bulk of them were made in Chicopee Falls, or Utica, NY.
Probably at midnight, December 31, 1968, when they were required by the Gun Control Act of 1968.
1947-52
There are no fixed locations, they just start appearing when you are at a high level.
Steven was personally victimized by Regina George
I just went to my uncles houe and was looking at his two guns..1 was a 12 gua. and a 16. gua Stevens and i was researching..the company "was" located in chicopee falls, mass. If you were to get the serial number off of it.. you may be able to find iton the stock or on the barell. you may check on that n find out.. i am only 13so really don't know much but i have been researching for over 2 hours so far but it is between 1878 and 1947 if it doesnt say savage on it also Good start for a 13-year-old. I was in my 50s before I knew that much, or cared to know it. J. Stevens and Company, 1864-1886; J. Stevens Arms and Tool, 1886-1916; J. Stevens Arms Company, 1920-1942(+/-); J. Stevens, 1942(+/-)-1947; Stevens (or Stevens & Savage) 1948-1991 and 1999-present.
Start by contacting Savage Arms Customers Service through their website (they own the Stevens brand) and ask for an owner' manual.
You can start with the Wikipedia article on second language learning, appearing in the related links. Go from the article to its bibliography part, containing several articles. You can also start with Stephen Krashen's papers, also appearing in the related links.
Start looking at gunpartscorp.com
at the start of season 6
between 1960s and1980's this was the old fashion phone boxes
episode 161 the start of season 6