The Twinkie, it turns out, was introduced way back in 1930. In our memories, however, the iconic snack will forever be identified with the 1950s, when Hostess popularized the brand by sponsoring “The Howdy Doody Show.” And the demise of Hostess has unleashed a wave of baby boomer nostalgia for a seemingly more innocent time.

Needless to say, it wasn’t really innocent. But the ’50s — the Twinkie Era — do offer lessons that remain relevant in the 21st century. Above all, the success of the postwar American economy demonstrates that, contrary to today’s conservative orthodoxy, you can have prosperity without demeaning workers and coddling the rich.

Consider the question of tax rates on the wealthy. The modern American right, and much of the alleged center, is obsessed with the notion that low tax rates at the top are essential to growth. Remember that Erskine Bowles and Alan Simpson, charged with producing a plan to curb deficits, nonetheless somehow ended up listing “lower tax rates” as a “guiding principle.”

Yet in the 1950s incomes in the top bracket faced a marginal tax rate of 91, that’s right, 91 percent, while taxes on corporate profits were twice as large, relative to national income, as in recent years. The best estimates suggest that circa 1960 the top 0.01 percent of Americans paid an effective federal tax rate of more than 70 percent, twice what they pay today.