Sometimes they called them conferences, sometimes they called them congresses. These were large international gatherings organized by the IFEO, the International Federation of Eugenic Organizations. Leonard Darwin was the first president of IFEO, then came Davenport, followed by Ernst Rudin (the Nazi.) The third conference was held in New York, and the exhibit was held at the the American Museum of Natural History. At the exhibit there appeared a fine bust of Charles Darwin with the inscription
Charles Robert Darwin, 1809-1882, master demonstrator of organic evolution. Darwin demonstrated the close parallel between man’s actual improvement of domestic plants and animals and the possible improvement of human family stocks. He believed that the most substantial advance in human progress would be made when man appreciated that he could, to a limited degree, control his own future racial evolution.
The New York Times published a review of the 3rd congress. Here it is.
Genes and Eugenics, NY Times, Aug 24, 1932.
After having gloomily predicted the decline of mankind unless something is done to stop the socially unfit from propagating, the eugenists ended their third international congress in New York. Thereupon the geneticists opened their sixth international congress at Ithaca, N.Y., to discuss the mechanism of heredity. In a single week we are thus granted the opportunity of comparing the theories and methods of two schools. On the one hand, much loose about sterilizing the feeble-minded and restricting marriages of undesirables; on the other, earnest experiments in shuffling genes, the ill-understood atoms of life, to learn how idiocy and genius may arise in the same family.
To its founder, Galton, eugenics was the study of the agencies under social control that affect the race for better or for worse. In time, eugenics seems to have become a disguise for race prejudice, ancestor worship and caste snobbery. The eugenically inclined Wethams can write of the dangers that lie in giving scholarships to “those who win them too suddenly and completely out of their natural class,” and of the necessity of protecting classically trained men who cannot get on in the world, but who have “the guarantee of character and the intruitive sense of masterfulness that are the usual concomitants of the man of good family.” And there is the arch-eugenist, Major [Leonard] Darwin, who sent a paper to be read at New York, frankly admitting that he would like to see a caste system introduced “so rigid as to prohibit all movement between the social strata” in order to remedy the “harm done… by educational facilities generally.”
These are the views of staunch of the now discredited doctrine that social salvation lies with the supposedly pure Nordics. Moderates at the New York congress were more disposed to admit that, without an improvement in the economic environment, eugenics is a mere hope than than to harp on desirable grandfathers and grandmothers. Although it is not likely that the hightly technical addresses on breeding plants, mice and fruit-flies to be read at Ithaca will provide as much popular material as, for example Professor Osborn’s argument on the curbing of birth control and the encouraging of birth selection, they will indicate clearly enough that eugenics can become a practical creed only when the geneticist has discovered how the defective genes in all of us can be identified.
 W. Cecil Dampier Wetham and his wife, members of the Cambridge Association for the Care of the Feeble-Minded and other eugenics organizations. Authors of books on eugenics.