Eureka, California
"Eureka" received its name from a Greek word meaning "I have found it!" This exuberant statement of successful (or hopeful) gold rush miners is also the official motto of the State of California. Eureka is the only U.S. location to use the same seal as the state for its seal.
A.U.E.
The acronym, transcribed from or А.У.Е., comes from "Арестантский уклад\устав един" or "Арестантское уркаганское единство", which can be translated to English as Convict’s/Prisoner’s Practice/(way of life, law)/Codex is Unified/Universal/Uniform, or Prisoner’s/Convict’s Urka/(career con)/Thug Unity/Solidarity.