Pay attention to whether an invitation includes an RSVP, how the invitation is delivered, and the expected response date.

Old Wafer-Thin Wooden Tablet With Heartfelt Birthday Party Invitation Discovered, Earliest RSVP Evidence Archaeologists knew they had found a treasure house of historical artifacts when they uncovered ...

The other side is the party invitation. The text, according to a translation from the British Museum, reads as follows: "Claudia Severa to her Lepidina, greetings. On September 11, sister, for the day ...