The Sweet Onion Restaurant Vintage Ad T-shirt

Big mistake on this matchbook cover- the design is cool (probably from the 1970s), but there is no city or address anywhere on it. Kind of loses the purposes of the matchbook (aside from lighting things on fire).

The Sweet Onion Restauarant; Location Unknown

Thanks for looking! Here's the shirt info:

This classic unisex jersey short sleeve tee fits like a well-loved favorite. Soft cotton and quality print make users fall in love with it over and over again. These t-shirts have-ribbed knit collars to bolster shaping. The shoulders have taping for better fit over time. Dual side seams hold the garment's shape for longer.

.: 100% Airlume combed and ringspun cotton (fiber content may vary for different colors)
.: Light fabric (4.2 oz/yd² (142 g/m²))
.: Retail fit
.: Tear away label
.: Runs true to size