For other versions see Margaret Sanger Papers Microfilm: Smith College Collections, S71:274 and
Margaret Sanger Papers Microfilm,cLibrary of Congress, LCM 131:0489 LCM:493.
Sanger wrote this introduction to the four-volume Proceedings of the
Sixth International Neo-Malthusian and Birth Control Conference,. The conference was held
between March 25-30, 1925. For other version see Margaret Sanger Microfilm…
