Steve Post's Central Park Fat-In. He may have written the piece earlier, magazine lead-in times can be quite lengthy. I don't know if Louderback went to the Fat-In, I think at that time he may have been more straight-laced than Post, but he was certainly impressed by it. It strikes me that 1967 was when fat activism had a moment of convergence with civil rights, pranksterdom and popular journalism. That late 60s feeling that anything could happen.
In his article, Louderback calls for many of the rights and recognitions that remain preoccupations of fat activists today. He talks about fatphobia, discrimination, thin privilege and draws on his personal experience of being fat and stopping dieting. Like many current activists he cites medical evidence to make his case, and is concerned about the representation of fat people in fashion media. It's amazing how far back these preoccupations go, and interesting that he is a guy writing this when so much of the discourse has been developed by women.
The piece is dated: he refers to his wife but doesn't name her (she was called Ann); he reproduces the now well-debunked myth that Americans are more likely to protest racism than fatphobia; he invokes the Nazis and quotes a somewhat colonial doctor who says that if fat people want to feel alright then they should go to a society "where obesity is worshiped".
Some of what More people should be FAT proposes remains contentious. The idea that fat people are fat because we eat junk food, for example. What fat people eat, the idea of fat people being ignorant about food, the causes of fat, the celebration of junk, and also counter-claims that deny these things are still being hashed out, and vulnerable to appropriation by anti-obesity policymakers.
Louderback makes some curious claims too: that fat hatred is rooted in US puritanism (recent Fat Studies scholars have also argued a case about religiosity and fatphobia), that the American Civil Liberties Union should get on the case (did that ever happen?) and that fat hate represents "the growing power of the group over the individual" (what were his politics at that time, I wonder?).
This article was published 48 years ago though was massively influential, as I explain in my book. It went on to spawn many things but was a relatively short and humble piece of journalism tucked away in a magazine. Louderback was a man who had had enough and couldn't take it any more.
By the way, I've no idea why FAT is capitalised, but I like it.
Louderback, L. (1967) 'More People Should Be FAT', Saturday Evening Post, 4 November, 10-12.