Here you can download free data of the S&P 500 from 1789 until today (for Excel, in format: Daily, Weekly, Monthly, etc.): https://stooq.com/q/d/?s=%5Espx&c=0 write at the top left (in the box: Symbol np): ^SPX and then click on: Kwotuj and then click at the bottom left on: Historical data choose Interval: Daily, Weekly, Monthly, etc... click at the bottom on: Download data in csv file
The worst drawdown of 86.1% was during the stock market collapse of 1929 occurring in June 1932 - yikes! Other significant drawdowns: Apr 1942 - 76.6% Feb 1843 - 71.4% Sept 1859 - 60.8% Mar 2009 - 56.8% (financial crisis) Aug 1896 - 50.5% The recent COVID drop of 33.9% in March 2020 pales in comparison.
Data before March 4, 1957 isn't the S&P 500. https://www.reuters.com/article/us-usa-stocks-sp-timeline-idUSBRE9450WL20130506
1884 the first US index created was the Dow Jones Transportation Average (DJTA) followed by the Dow Jones Industrial Average (DJIA) in 1896.
Wow Khemosabi, slow down. Why not from Jesus' birthdate? How about from the dawn of man? Historical index charts are meaningless, because the "ingredients" keep changing, thus they are uncomparable...
In the book: The Right Stock at the Right Time Prospering in the Coming Good Years by Larry Williams, are published some statistics from 1871 of the Index: S & P Composite Stock Price Index; probably at that time this was the reference Index, and only later became the S & P 500.