Years ago, 25 or so, sports energy snack called PowerBar would pay anyone $100 if they wore a PowerBar logo t-shirt or apparel during or participating in a sporting event and a photo of it was published in print. Had to be well before www amazing internets.
Somewhere it’s been written about how the whole T-shirt advertising as a marketing tool got started. Interesting and simple concept that hardly gets any thought these days as the trend of brand promotion has become daily fashion.