I did some looking for a c. 1900 "Wilson" foundry or steel works and didn't find anything. Wonder if the Wilson connection is with the Chicago location in your ad??

Here's there 1916 catalog
https://archive.org/details/electricwelding00wilsrich

The "Wilson's Welded Steel" was only used by Sears on Crescent and also Colton double guns 1900-shortly after 1902.