Theo tin Philly Pretzel Factory hay prnewswire.com 170-Plus Participating Locations to Offer Discounted Pretzel Dogs on July 19, 2017 PHILADELPHIA, July 17, 2017 /PRNewswire/ — In honor of National Hot Dog Day, Philly Pretzel Factory will be offering its delicious pretzel dogs for only $1 on Wednesday, July 19,...