Birth and population control
16 objects illustrate this topic:

 Page: of 2
"On Catholicism, As Revealed in the latest Encyclical of His Holiness Pope Pius XI," Eugenics Review (vol 23:1), papal decree condemning eugenics, multiple pages (#1814)
People (April 1931) news items: disputed quote by President Herbert Hoover, Senate tesitmony on birth control, use of eye color inheritance in courts, multiple pages (#1614)
Profile of Frederick Huntington Gillett, People (April 1931) (#1603)
Tenement dwellers, "How can they be helped?" Eugenics: A Journal of Race Betterment (vol II:8) (#1734)
"The German Racial Policy," by C.G. Campbell, Eugenical News (vol.21:2), multiple pages (#1906)
"The Sixth Annual Meeting of the Eugenics Research Association," July 21, 1918, Eugenical News (vol. 3) (#1875)