Again with the late in the year ads. This one is from December 13, 1902, right below an ad for a “manly” boarding school:
Window trimming refers to the arrangement of sales goods behind the plate glass storefront windows that were so common many years ago. For a contemporaneous discussion of it, you can read “Fighting for his Own“, a juvenile novel written by the well-known (notorious?) Edward Stratemeyer.
Now, an an attempt to search out this firm I cannot find much of anything, because they unluckily chose the name very similar to that of a current day news magazine.