Where can you find information about a Model 258 shotgun?

I also have the J. Stevens Arms Co mod 258A 20 gauge shotgun. Mine had no stock until today,cut one out of some black walnut just for this old long barrel.The maker J. Stevens And model 258A 20 Gauge shotgun. I put a brown finish insted of blue on this one. It is a lot of fun to shoot too! Sorry i have no idea what it is worth.