It is a relatively easy process to do a Google “images” search on the web for the words or markings on a piece to see if you can find a match.Be as descriptive as you can when doing your search.GENERAL TIPS FOR IDENTIFICATION Does the skillet have any markings on it at all?The Internet has opened up a myriad of ways to identify cast iron.Turn over your cookware so the bottom is facing up.Make note of all markings on the bottom of the pan and their location. Also look for a size designation, usually a number, such as 8. Very old pans have a raised ring around the bottom.Wagner and Wagner Ware (did you know there was a difference?
It is bad because I think the old and Wagner Ware pieces deserve a little more respect.
At various times the Wagner Manufacturing Company used curved and straight logos, with or without the "Sidney, O" designation underneath. This kept the cookware from direct contact with the top of a wood stove. Note if there is a sharp ridge or a hollowed-out section where handles connect to the bodies of skillets.
All these things provide clues to the age of your cookware. "The Book of Griswold and Wagner" is favored by many collectors.
Without their wood burning stoves, the camp Dutch oven provided a way for the travelers to cook their meals over an open fire.
Wagner Hollow Ware Company (Pre Wagner Manufacturing Company)The official start of the Wagner Manufacturing Company was in 1891 and you can see the centennial commemoration of this in the 1991 version of the cast iron frying pan.