116

submitted 1 year ago by Jackcooper@lemmy.world to c/asklemmy@lemmy.ml

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Let me know if there is a better community for this type of question. I am still learning my way around.

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[-] what@lemmy.world -4 points 1 year ago

Carrier pigeons? Idk.

[-] Akasazh@feddit.nl 1 points 1 year ago

Aside from the answers already given, the were ways of folding letters that were tamper proof, destructive in opening, called letter locking.

this post was submitted on 19 Jul 2023

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