From an article in The New Republic by Ruth Franklin:
In 2010, "[a]t Harper’s, there were 27 male book reviewers and six female; about 69 percent of the books reviewed were by male authors. At the London Review of Books, men wrote 78 percent of the reviews and 74 percent of the books reviewed. Men made up 84 percent of the reviewers for The New York Review of Booksand authored 83 percent of the books reviewed. TNR, I’m sorry to say, did not compare well: Of the 62 writers who wrote about books for us last year, only 13 (or 21 percent) were women. We reviewed a total of 64 books, nine of them by women (14.5 percent). 'We know women write,' poet Amy King writes on the VIDA website. 'We know women read. It’s time to begin asking why the 2010 numbers don’t reflect those facts with any equity.'
"We looked at fall 2010 catalogs from 13 publishing houses, big and small. Discarding the books that were unlikely to get reviewed—self-help, cooking, art—we tallied up how many were by men and how many were by women. Only one of the houses we investigated—the boutique Penguin imprint Riverhead—came close to parity, with 55 percent of its books by men and 45 percent by women. Random House came in second, with 37 percent by women. It was downhill from there, with three publishers scoring around 30 percent—Norton, Little Brown, and Harper—and the rest 25 percent and below, including the elite literary houses Knopf (23 percent) and FSG (21 percent). Harvard University Press, the sole academic press we considered, came in at just 15 percent.
"As a member of third-wave feminism, growing up in the 1970s and ’80s, I was brought up to believe we lived in a meritocracy, where the battles had been fought and won, with the spoils left for us to gather. It is sobering to realize that we may live and work in a world still held in the grip of unconscious biases, no less damaging for their invisibility."