It always amuses me when a large magazine discovers something about the religious world or culture wars issues that many of us have known about for decades.

Recently, the Atlantic made the surprise discovery that the pro-life movement had some liberal founders. The piece, by Emma Green, is actually a book review of “Defenders of the Unborn,” by University of West Georgia professor Daniel Williams. You may remember Williams from his 2012 book “God’s Own Party: The Making of the Christian Right.” This time around, he’s come out with a tome reminding people that it was the left that first opposed abortion.

The Atlantic's treatment has considerable less snark than a similar New York Times review last month that assumed readers were liberals who can't imagine how someone reasonable could oppose abortion. But it does have some gaps. It starts thus:

Ronald Reagan. Barry Goldwater. George Wallace. These men probably won’t be featured on pro-choice pamphlets any time soon, but during at least some point in their political careers, the Moral Majority-era president, conservative stalwart, and infamous segregationist all favored the legalization of abortion. In the four decades since the Supreme Court decided Roe vs. Wade, the political debate over abortion in America has become stale and polarized, with two sides utterly divided and little change in public opinion. But in the years leading up to Roe, many people’s views on abortion didn’t fit neatly into either liberal or conservative ideology. In fact, early anti-abortion activists viewed their cause as a struggle for civil and human rights, of a piece with social programs like the New Deal and the Great Society.

In a new book, "Defenders of the Unborn," the historian Daniel K. Williams looks at the first years of the self-described pro-life movement in the United States, focusing on the long-overlooked era before Roe. It’s somewhat surprising that the academy hasn’t produced such a history before now, although Williams says that’s partially because certain archives have only recently opened. But the gap in scholarship is also partly due to the difficulty of putting abortion into a single intellectual framework.