Crossword clues for Era 4 lettersAnswerClueERASBig Ban et al.^ERAERASHistornians' concerns^ERAERASKey timesERASDistinctive timesERASHistorical studyERASAnnals of historyERASHistorical time periodsERASBaseball statsERASMemorable spansERASMajor spansERASTimes given namesERASSwing and JazzERASSwing and DiscoERASSome timesERASCry of alarmERASAge relativesERASTimes often named for presidentsERASCertain time spansERASCy Young statsERASHistoric segmentsERASProminent timesERASLabeled timesERASSpans often presidentially namedERASNamed stretchesERASJazz and SwingERASAccentuated periodsERASPeriods often named for presidentsERASParts of timelinesERASTimes often named for music genresERASImportant agesERASWell-known timesERASTimeline slicesERASSwing et al.ERASThey span yearsERASMany are named for presidentsERASHistorians' subjectsERASNoteworthy stretchesERASHistorians' concernsERASBallpark figs.ERASPeriods worth rememberingERASPresidencies, to historiansERASStretches with significanceERASTimes pastERASSignificant spansERASBig Band and "Jazz" periodsERASBig periodsERASPeriods often named for music genresERASRemarkable timesERASBig historical periodsERASJazz and Disco periods