1940s 1970s facts

While investigating facts about 1940s 1970s, I found out little known, but curios details like:

Between the 1940s and 1970s several Ivy League schools, including Harvard and Yale, took mandatory nude photographs of all freshman students

From the 1940s until the 1970s, Ivy League schools including Harvard and Yale took nude photos of all incoming freshmen.

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 13 of the best facts about 1940s 1970s I managed to collect.

1. Pinball was banned from the early 1940s to the mid-1970s in most of America's big cities, including New York, Los Angeles, and Chicago. The NYPD even held Prohibition-style raids on pinball during the tenure of Mayor La Guardia.

2. Organized cheerleading started in the late 19th century as an all-male activity, and women were mostly overlooked until the 1940s. By the 1960s, some began to consider cheerleading a feminine extracurricular for boys, and by the 1970s, girls primarily cheered at public school games.

3. Between the 1940s and the 1970s, Harvard and Yale took nude photos of all their incoming freshmen students.

4. Bedbugs were virtually eradicated in the 1940s and '50s by the widespread use of DDT. DDT insecticide was banned in the 1970s, and the bugs developed resistance to chemicals that replaced it. After that bed bug infestations resurged

5. Pinball was illegal in the US from the 1940s to the 1970s. This included federal raids on candy stores, arcades, and bowling alleys to stop people from using them.

6. In the 1940s - 1970s, incoming freshmen at certain Ivy League colleges including Harvard & Yale were photographed naked to gauge the rate and severity of rickets, scoliosis and lordosis. The remaining images were sent to the Smithsonian and most were destroyed between 1995 - 2001.

7. During the late 1940s and 1950s, Sweden had programs for both nuclear and chemical weapons. However, no weapon was ever deployed. In the late 1960s, the political and budgetary problems hindered the use of these weapons, and, by the mid 1970s, all plans for these weapons were scrapped.

8. In the 1940s Menachem Begin was a terrorist. In the 1970s he won the Nobel Peace Prize (Wikipedia).

What is true about 1940s 1970s?

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Pinbal was banned from the early 1940s to the mid-1970s in most of America's big cities. It was a game of chance, not skill, and so it was a form of gambling. In fact, one of the key parts of pinball: the flippers, weren't invented until 1947, five years after most of the bans were implemented.