How can you purchase a stock for a 1915 riverside arms 12 gauge hammerless doublebarrell?
I believe the 1915 patent date means the gun is identical to the Stevens 311 series. Numrich Gunparts at the related link should be able to help you.
Where can you find information about a 20 gauge Riverside single barrel shotgun serial 961yk patented August 12 1913?
First question: is this a hammer or a hammerless shotgun? If a hammer gun it looks like potential year of manufacture was 1895. If hammerless, around 1901. If the firearm is in decent shape, you have something there. I have a hammerless twelve bore s x s field grade with the serial number 307204, it looks like mine was manufactured in 1906. You may google "lc smith 12 gauge year of manufacture" and find more…
What year did J Stevens Firearms make the Springfield double barrel sixteen gauge hammerless shotguns?
The Springfield name was used starting about 1915 until the late 1940's. From 1916 to 1920, the plant was used to manufacture Mosin-Nagant rifles for the Russian military and no Stevens firearms were produced. In 1920 the company was purchased by Savage Arms and production of the Stevens trade names, including Riverside and Springfield, was resumed.
Where may you find information regarding a 12 gauge double barrel shotgun patented on April 20 1915 by Riverside Arms Co?
Riverside Arms is a brand name used by the J Stevens Arms Co. on many good quality double barrel shotguns. The value depends on model, gauge, and condition. The values can range from $100 to $1600. Seek professional appraisal from a gunsmith or advanced collector. Information about the J Stevens Arms Co. would apply to Riverside Arms.