Invitation Letter from Jindosh is a written note in Dishonored 2.
Dear Mister Hadros,
It would be my pleasure to play host to you and to give you a personal demonstration of my Clockwork Soldiers as you take possession of yours. As you must know, the cost is exceptionally high, but once you see one of my creations in action you will be unable to resist the purchase.
Please arrive on the appointed date, between the hours of two and three in the afternoon. It is important that you arrive at the time I have specified as I might otherwise mistake you for an intruder.
This note can be found on a civilian named Hadros, who is located inside the Clockwork Mansion.