|The following is based on Fallout Shelter and some details might contradict canon.|
“According to a page from Paula Plumbkin's journal, Vault 525 really is Vaultopolis, but even she doesn't know where it is. But the Mayor's office may hold that information!”
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- "Aha! Here it is!"
- "The official documentation Vault-Tec sent to the Mayor's office..."
- "...with the location of Vault 525! And they did indeed have a G.E.C.K.!"
- "Says here the entrance was hidden in the Red Rocket Headquarters!"