Pa.’s best diner, the day Philly rocked the world, and more!

In today’s Feelgood Friday edition of the Keystone newsletter:
🥞 Pa.’s best diner is ???
🎸 Remembering the day Philly rocked the world
💎 :Yinzers unite to find a lost diamond
🛍️ ACME employee retires after 61 years on the job