I've seen many trade cards in my years as an antique dealer, and I would say McLaughlin's Coffee and Clark's ONT Cotton would be two the most prolific in terms of their production of trade cards. Years ago, before folks like us used to put together family pictures in elaborate scrapbooks that have become so popular now, "scrapbooking" was a popular hobby during the Victorian era although the content of the scrapbooks was different. People collected colorful advertising trade cards and diecut "scrap" and filled their books with these items instead of baby's first birthday and graduation pictures. For more information about scrapbooking long ago, read my post Meet the Original Scrapbookers.
Today I want to share several McLaughlin's Coffee trade cards. These all came from one scrap album.
Often, there would be a series of trade cards that one could collect, like "Ancient War Ships."
Not all cards were illustrations. The card below was one of a series of real photographs:
You can see in the bottom left corner it says "This is one of a set of twenty cards."
For an interesting resource of online examples and prices of trade cards realised at auction, visit The Trade Card Place. It's a great reference and you'll see many rare and interesting trade cards.