Nevertheless, the Grimms are premier representatives of the nationalism that became Aryanism in the nineteen-twenties and thirties, and the Nazis were grateful to them.

NEWYORKER: Once Upon a Time

A. had a political arm, it opposed some gun-control measures and supported many others, lobbying for new state laws in the nineteen-twenties and thirties, which introduced waiting periods for handgun buyers and required permits for anyone wishing to carry a concealed weapon.

NEWYORKER: Battleground America

Eastwood and the screenwriter Dustin Lance Black have re-created that period in the nineteen-twenties and thirties when a righteous young man with a stentorian style could electrify a nation.

NEWYORKER: The Man in Charge

The movie follows a pair of male Beijing Opera performers, Cheng Dieyi (Leslie Cheung) and Duan Xiaolou (Zhang Fengyi), from their school days, in the nineteen-twenties and early thirties, to their farewell performance together, in 1977.

NEWYORKER: Farewell My Concubine

He told me a little about their lives out there on the ranch in the late nineteen-twenties and during the early thirties.

NEWYORKER: Beginners

The communications department made up mostly of guys in their twenties and thirties had a fraternity-house quality.

NEWYORKER: Battle Plans

Anyway, so we bought this house, and right away I started going through the June Cleaver homemaking phase that all my women friends went through in their twenties and thirties while I was out rockin' and rollin'.

NPR: Marshall Chapman: 'Goodbye, Little Rock and Roller'

This revelation may come too late for many Baby Boomers, but recent studies show that people in their twenties and early thirties are starting to figure it out, taking cues from the disasters of their elders.

FORBES: The New Retirement Plan: Save More, Invest Less