I stumbled on this paper and became curious, so I read it. It’s good, it starts at the beginning of adoption in the US circa 1850 and travels through the different periods of adoption history. It’s a must read, grab a beverage of choice and settle down to move through the many eras adoption has evolved through, while also keeping you up to date with what society was at that point in history.
It’s worth your time to stroll down the path adoption in the US has taken since the 1850’s.
David R. Papke, Pondering Past Purposes: A Critical History of American Adoption Law, 102 W. Va. L. Rev.
(1999). Available at: https://researchrepository.wvu.edu/wvlr/vol102/iss2/8