TRACKERS INTERNATIONAL SURVEY OF 1000 UNMARRIED MOTHERS 1950 – 1975
This seems to be the origin of the "98% of birth mothers would have kept their babies if they had resources" claim that is always going around. That's not the question asked, and the data is VERY old. Quote at your own risk.
(PDF) Adoption Decision Making among Women Seeking Abortion
PDF | Background: Little is known about how adoption factors into pregnancy decision making, particularly when abortion is unavailable. Methods: We... | Find, read and cite all the research you need on ResearchGate