Answer:

twenties

Answer	Crossword Clue
TWENTIES	Decade of flappers
TWENTIES	ATM output
TWENTIES	Roaring time?

TWENTIES	Certain engravings of Andrew Jackson.
TWENTIES	Post-war era.
TWENTIES	Flapper era.
TWENTIES	Bills bearing Jackson's likeness
TWENTIES	Certain bills
TWENTIES	Jacksons
TWENTIES	ATM fillers