The following sources were consulted in the preparation of the article “15 things that were once illegal, but are totally normal now.”
From Acacia to IUDs: The History of Birth Control in the United States
History of swimwear
Legality of cannabis
History of gambling in the United States
Prohibition in the United States
Anti-miscegenation laws in the United States
Blue law
The Journey to Marriage Equality in the United States