If you'd like to order t-shirts for this event, developed by Dallas Society of Play, follow these links for different versions:
Multicolor - https://www.amazon.com/dp/B078Y3G238
Mono Black - https://www.amazon.com/dp/B07919TH4S
Mono White - https://www.amazon.com/dp/B07919T96G
If you have Amazon Prime, you'll need to order by Saturday (maybe Sunday) for shirts to arrive by the Jam!