Answer: goldenspike

AnswerCrossword Clue
GOLDENSPIKETranscontinental railroad completer
GOLDENSPIKEImage on Utah's state quarter
GOLDENSPIKEModern locks for Midas?
GOLDENSPIKEFinishing touch on the first transcontinental railroad
GOLDENSPIKESymbol of the completion of the Transcontinental Railroad